Qur’anic Root F A D (ف أ د)
Fuʾād: the heart, perception, and responsiveness, from understanding and inclination to fear and firmness
Qur’anic forms
1. Introduction and Qur’anic forms
The Arabic root ف أ د (fāʾ–hamzah–dāl; F ʾ D) has two familiar semantic fields: heat, burning, and roasting over fire; and فُؤَاد (fuʾād), the heart of a living being. In human usage, fuʾād does not merely name a bodily organ. It can also be associated with understanding, perception, inclination, fear, and responsiveness.
In early Arabic, fuʾād and قَلْب (qalb) are very close, and one can sometimes stand for the other. Some lexicographers proposed distinctions between them, but those distinctions are neither uniform nor universally accepted.
The Qur’an uses fuʾād in varied situations: when someone hears and sees; judges what has been seen; inclines toward someone; becomes distressed through fear and anxiety; or gains firmness through receiving the divine message.
Fuʾād therefore cannot be defined simply as an “organ of emotions” or a “center of reason.” Its Qur’anic uses extend beyond that simple division.
The root’s Qur’anic forms
The root occurs 16 times in 15 Qur’anic verses. Every occurrence belongs to the same noun, فُؤَاد (fuʾād), or its broken plural, أَفْئِدَة (afʾidah). These are the singular and plural forms of one word, rather than two independent lexical words:
- فُؤَاد (fuʾād): singular, “heart.” Five occurrences: Hūd 11:120, Al-Isrāʾ 17:36, Al-Furqān 25:32, Al-Qaṣaṣ 28:10, and Al-Najm 53:11.
- أَفْئِدَة (afʾidah): the plural of fuʾād, “hearts.” Eleven occurrences in ten verses: Al-Anʿām 6:110, Al-Anʿām 6:113, Ibrāhīm 14:37, Ibrāhīm 14:43, Al-Naḥl 16:78, Al-Muʾminūn 23:78, Al-Sajdah 32:9, Al-Aḥqāf 46:26 (twice), Al-Mulk 67:23, and Al-Humazah 104:7.
No verb from this root occurs in the Qur’an. All its Qur’anic uses concern fuʾād and its plural.
Arabic nevertheless records other forms:
- فَأَدَ (faʾada): roasted over fire; in another use, struck or injured someone’s heart.
- فَأْد (faʾd): roasting or striking the heart, depending on usage.
- فَئِيد (faʾīd): meat or bread roasted or cooked over fire; in another use, fire itself.
- مِفْأَد (mifʾad) and مِفْأَدَة (mifʾadah): roasting implements, such as a metal spit or a tool for tending a fire.
- مُفْتَأَد (muftaʾad): a place for kindling fire and roasting.
- تَفَؤُّد (tafaʾʾud): burning and intense heat.
- مَفْؤُود (mafʾūd): someone whose heart has been injured or is afflicted with pain or illness.
These forms help illuminate the root’s lexical background. Since they do not occur in the Qur’an, however, their meanings should not be transferred directly to every Qur’anic occurrence of fuʾād.
2. Semantic core and evidence from early Arabic
Fire, heat, and burning
Arabic lexical explanations identify roasting something over fire as one familiar meaning of فَأَدَ (faʾada).
For example, فَأَدَ اللَّحْمَ (faʾada al-laḥma) means roasting meat, and فَأَدَ الْخُبْزَةَ (faʾada al-khubzata) is recorded for baking bread in fire or hot ashes.
In early cooking methods, meat could be roasted over fire and embers, while bread could be placed in hot ashes to bake. Names for the relevant implements and places also belong to this family.
مِفْأَد (mifʾad) could denote a roasting implement, and مُفْتَأَد (muftaʾad) a place where a fire is kindled.
Arabic تَفَؤُّد (tafaʾʾud) likewise concerns burning and a fire growing intense.
These uses show that the root’s connection with heat and fire is not merely a poetic image invented in modern times. It is recorded in the actual vocabulary of Arabic life.
Why is the heart called fuʾād?
One lexical explanation relates the naming of fuʾād to its heat and burning.
This explanation has a recognizable connection with human experience. Intense fear, longing, grief, anger, and anxiety can involve sensations of warmth, pounding, and agitation in the chest. Hearts have accordingly been associated with warmth and burning in different languages.
A semantic connection must nevertheless be distinguished from proof of a word’s derivational history.
Lexicographers’ explanation that fuʾād was named for its heat or burning describes a relationship between words. It does not definitively establish that fuʾād originally meant only fire and was subsequently transferred to the heart.
The heart’s movement and beating can also feature in an experiential explanation of this connection. The experience of a heartbeat is not, by itself, lexical evidence or documentation of why fuʾād was historically named. Such an experiential explanation should not be equated with lexicographers’ direct accounts concerning heat and burning.
What can be said with confidence is that fuʾād was an established Arabic name for the heart, and its linguistic family also involved heat and burning.
This does not mean that whenever the Qur’an mentions fuʾād, it means a “burning heart,” “intense emotion,” or “inner combustion.”
Some verses place the heart in fear and distress; others concern awareness, perception, judgment, and responsibility.
Fuʾād: a bodily organ and a locus of responsiveness
Early Arabic uses fuʾād for humans and animals. This establishes its familiar use for the heart of a living being, but does not by itself prove that its bodily use historically preceded uses concerning perception and emotion.
A lexical witness whose poet is not identified describes a she-camel compared to a wild she-ass:
كَمِثْلِ أَتَانِ الْوَحْشِ أَمَّا فُؤَادُهَا
فَصَعْبٌ وَأَمَّا ظَهْرُهَا فَرَكُوبُ
“Like a wild she-ass: her heart is unruly and hard to tame, but her back is ready to be ridden.”
Here, fuʾād is attributed to an animal and associated with unruliness.
It can therefore feature in descriptions of a living being’s disposition and responses. Unruliness is not, however, part of the meaning of fuʾād itself; it comes from the adjective صَعْب (ṣaʿb).
Another verse, attributed to Abū Dhuʾayb al-Hudhalī, reads:
رَآهَا الْفُؤَادُ فَاسْتُضِلَّ ضَلَالُهُ
نِيَافًا مِنَ الْبِيضِ الْحِسَانِ الْعَطَابِلِ
“The heart saw her, a tall woman among fair, long-necked beauties, and became lost in infatuation.”
This verse matters for the nonphysical use of fuʾād because the poet attributes seeing to the heart without intending a physical eye inside it. الْعَطَابِل (al-ʿaṭābil) describes women of fine figure and graceful, long neck. In this vocalization, فَاسْتُضِلَّ ضَلَالُهُ (fa-stuḍilla ḍalāluhu) is passive; the image is the heart’s bewilderment in infatuation.
Seeing here is connected with infatuation and inward perception.
Abū Dhuʾayb belongs to the transition from pre-Islamic times to Islam. The precise date of this verse’s composition has not been independently established, however. Without further investigation, it should not be presented as definite evidence from before the Qur’an’s revelation.
Together, the examples show Arabic fuʾād naming the heart as well as expressing human perception and responsiveness.
Fuʾād and qalb in Arabic
Lexical explanations commonly define fuʾād through qalb, “heart,” but record different views of their precise relationship.
Some identify fuʾād with the heart itself; others with its middle or interior. Another explanation relates it to the heart’s covering or container.
These differences prevent taking one definition, without examination, as an absolute rule of Qur’anic language.
In particular, these explanations should not be used to reconstruct the detailed structure of the human heart through modern medical classifications, or to claim that the Qur’an describes two independent anatomical organs.
It is more appropriate to recognize fuʾād and qalb as closely related words with potential overlap, and then examine the situations in which the Qur’an uses each.
3. Fuʾād alongside hearing and sight: human perception and responsibility
An important Qur’anic pattern places fuʾād alongside hearing and sight.
It occurs in Al-Naḥl 16:78, Al-Muʾminūn 23:78, Al-Sajdah 32:9, Al-Aḥqāf 46:26, and Al-Mulk 67:23.
Hearing, sight, and hearts
Al-Naḥl, 16:78
وَاللَّهُ أَخْرَجَكُمْ مِنْ بُطُونِ أُمَّهَاتِكُمْ لَا تَعْلَمُونَ شَيْئًا وَجَعَلَ لَكُمُ السَّمْعَ وَالْأَبْصَارَ وَالْأَفْئِدَةَ لَعَلَّكُمْ تَشْكُرُونَ
“And The God brought you out of your mothers’ wombs knowing nothing, and provided you with hearing, sight, and hearts, so that you might give thanks.”
Here, fuʾād accompanies two familiar means of human perception: hearing and seeing.
The first clause concerns the beginning of human life and the absence of knowledge. It then mentions hearing, sight, and afʾidah.
This connection relates fuʾād in this context to people’s ability to receive and engage with the world.
People do more than hear sounds and see images. What they perceive can also become the subject of understanding, judgment, responsiveness, and choice.
Their association does not establish three completely separate systems, one receiving only sound, another only images, and a third performing only emotion or reasoning.
The verse itself offers no such precise classification.
Nor should fuʾād simply be translated as “brain.” Its Qur’anic use concerns perception, but that does not establish it as the name of an anatomical organ in the head.
The ending, لَعَلَّكُمْ تَشْكُرُونَ (laʿallakum tashkurūna), places these abilities among gifts that people should appreciate.
Gratitude is not, however, part of fuʾād’s lexical meaning. It arises from the complete verse’s construction.
The pattern repeated in other surahs
Hearing, sight, and hearts also occur together in Al-Muʾminūn 23:78, Al-Sajdah 32:9, and Al-Mulk 67:23.
All three attribute these abilities to The God and also mention human ingratitude in the context.
The repetition shows that fuʾād is more than a place of grief or longing in the Qur’an’s network of meanings. Alongside sensory perception, it is presented as an important human capacity.
The order of the words should nevertheless not be turned into a definite theory of the stages through which awareness develops. Hearing preceding sight does not by itself establish a chronology of nervous system development or a fixed ranking of cognitive faculties.
Having hearts without benefiting from them
Al-Aḥqāf, 46:26
وَلَقَدْ مَكَّنَّاهُمْ فِيمَا إِنْ مَكَّنَّاكُمْ فِيهِ وَجَعَلْنَا لَهُمْ سَمْعًا وَأَبْصَارًا وَأَفْئِدَةً فَمَا أَغْنَىٰ عَنْهُمْ سَمْعُهُمْ وَلَا أَبْصَارُهُمْ وَلَا أَفْئِدَتُهُمْ مِنْ شَيْءٍ إِذْ كَانُوا يَجْحَدُونَ بِآيَاتِ اللَّهِ وَحَاقَ بِهِمْ مَا كَانُوا بِهِ يَسْتَهْزِئُونَ
“And We had indeed established them in things in which We have not established you, and provided them with hearing, sight, and hearts. Yet their hearing, sight, and hearts availed them nothing, because they denied the signs of The God; and what they used to mock encompassed them.”
The root F A D occurs twice in this verse.
First, afʾidah is listed among the abilities given to people. The second occurrence states that these abilities did not benefit those people.
The distinction matters. The verse does not say they lacked hearing, sight, or hearts. On the contrary, they possessed all these abilities, but possessing them did not prevent their denial of the signs of The God.
Having a heart here therefore does not mean using it properly.
Nor does this make “guidance,” “faith,” or “infallible recognition of truth” the lexical meaning of fuʾād. A person accepting the truth can possess a heart, as can someone denying it.
The value of people’s conduct is understood from their engagement with the signs and their choices, rather than merely from possessing a heart.
4. Fuʾād and accountability for what a person knows
Al-Isrāʾ, 17:36
وَلَا تَقْفُ مَا لَيْسَ لَكَ بِهِ عِلْمٌ ۚ إِنَّ السَّمْعَ وَالْبَصَرَ وَالْفُؤَادَ كُلُّ أُولَٰئِكَ كَانَ عَنْهُ مَسْئُولًا
“Do not follow what you have no knowledge of. Indeed, concerning hearing, sight, and the heart, each will be asked about.”
This is one of the most important uses of fuʾād in connection with knowledge and responsibility.
The first clause prohibits following something about which one lacks knowledge. Hearing, sight, and fuʾād are then placed together, followed by a statement of accountability concerning them.
This connection relates fuʾād here to people’s responsibility for their knowledge and understandings.
Someone may hear something, see something, and form an understanding of it. Hearing a statement alone does not establish its truth, just as a personal impression does not become knowledge without valid grounds.
The association of fuʾād with hearing and sight therefore matters for understanding the relationship between perception and judgment.
It should not establish an absolute, exceptionless classification in which ears receive only raw data, eyes only raw images, and fuʾād alone performs the final analysis.
The verse presents no such detailed model.
كُلُّ أُولَٰئِكَ كَانَ عَنْهُ مَسْئُولًا (kullu ulāʾika kāna ʿanhu masʾūlan) concerns accountability. It should not be turned into a theory that bodily organs possess separate moral responsibility independently of the person.
The verse’s clear meaning is that hearing, seeing, and what occurs within the heart are not beyond the scope of responsibility.
This makes restricting fuʾād to a “center of emotions” difficult. Knowledge, following, and accountability are at issue.
5. Fuʾād and firmness: the Messengers’ accounts and the Qur’an’s revelation
Two singular occurrences directly concern Muḥammad. In both, The God speaks of making his heart firm.
The heart strengthened through the Messengers’ accounts
Hūd, 11:120
وَكُلًّا نَقُصُّ عَلَيْكَ مِنْ أَنْبَاءِ الرُّسُلِ مَا نُثَبِّتُ بِهِ فُؤَادَكَ ۚ وَجَاءَكَ فِي هَٰذِهِ الْحَقُّ وَمَوْعِظَةٌ وَذِكْرَىٰ لِلْمُؤْمِنِينَ
“We recount to you from the Messengers’ histories all that makes your heart firm. In these there has come to you the truth, an admonition, and a reminder for the believers.”
فُؤَادَكَ (fuʾādaka) here refers to Muḥammad’s heart.
نُثَبِّتُ (nuthabbitu), from another root, means making firm. Firmness therefore is not part of fuʾād’s meaning itself; it is something The God brings about in his heart.
The means is also stated: recounting the Messengers’ histories.
This shows that fuʾād can be affected by receiving speech and learning others’ histories.
Strengthening the heart does not mean that Muḥammad lacked faith or was astray before receiving these verses. The verse concerns reinforcement and confirmation, rather than necessarily changing disbelief into faith.
Nor should the address be emptied of meaning because he is a Messenger. The Qur’an does speak of strengthening Muḥammad’s heart. It shows the recipient of revelation needing divine support and firmness during his mission.
Gradual revelation and strengthening the heart
Al-Furqān, 25:32
وَقَالَ الَّذِينَ كَفَرُوا لَوْلَا نُزِّلَ عَلَيْهِ الْقُرْآنُ جُمْلَةً وَاحِدَةً ۚ كَذَٰلِكَ لِنُثَبِّتَ بِهِ فُؤَادَكَ وَرَتَّلْنَاهُ تَرْتِيلًا
“Those who disbelieved said, ‘Why was the Qur’an not sent down upon him all at once?’ Thus, so that We may strengthen your heart through it; and We arranged its recitation in a measured manner.”
Here too, receiving the message is connected with the heart becoming firm.
This time the subject is not recounting the Messengers’ histories, but a question about how the Qur’an was revealed.
Opponents ask why it was not revealed all at once. The answer identifies strengthening Muḥammad’s heart as one purpose of this manner of revelation.
Comparison with Hūd 11:120 shows that in both contexts the heart can gain firmness through hearing and receiving the message.
This firmness cannot be reduced to an emotional state, since receiving truth, being reminded, answering questions, and continuing the mission are also involved.
Conversely, strengthening the heart should not be reduced to increasing mental information. Strengthening itself concerns steadfastness, and the context shows the divine message affecting the addressee’s inward condition and capacity to persevere.
In these verses, fuʾād therefore concerns perception, responsiveness, and steadfastness, without any one of these constituting its entire lexical meaning.
6. The heart of Moses’ mother: becoming empty and gaining firmness
Al-Qaṣaṣ, 28:10
وَأَصْبَحَ فُؤَادُ أُمِّ مُوسَىٰ فَارِغًا ۖ إِنْ كَادَتْ لَتُبْدِي بِهِ لَوْلَا أَنْ رَبَطْنَا عَلَىٰ قَلْبِهَا لِتَكُونَ مِنَ الْمُؤْمِنِينَ
“The heart of Moses’ mother became empty. She almost disclosed his matter, had We not made her heart firm so that she might be among the believers.”
This verse is particularly important for studying fuʾād, because it uses both fuʾād and qalb in a single sentence.
The first part has فُؤَادُ أُمِّ مُوسَىٰ (fuʾādu ummi Mūsā), “the heart of Moses’ mother”; the second has قَلْبِهَا (qalbihā), “her heart.”
An empty heart: empty of what?
فَارِغًا (fārighan) means empty or vacant.
The verse does not explicitly say what her heart had become empty of.
In the narrative, Moses’ mother has entrusted her child to the water and faces anxiety about his fate. The verse then says she almost disclosed his matter.
Understanding this emptiness as intense distress and a loss of calm therefore fits the context.
Another interpretation understands her heart as emptied of attention to everything else and occupied only with Moses.
The explanations approach one another in result but differ in wording. Fārighan itself states emptiness; explaining precisely how it was experienced requires the context.
The basic translation should therefore retain “the heart of Moses’ mother became empty,” leaving distress and anxiety to the explanation.
Fuʾād and qalb in one verse
The verse continues: رَبَطْنَا عَلَىٰ قَلْبِهَا (rabaṭnā ʿalā qalbihā).
رَبْط (rabṭ) concerns binding and making firm. In this context, The God strengthens her heart so that she can bear the difficult situation and avoid disclosing what must remain hidden.
Does this prove that fuʾād is the seat of emotion and qalb the seat of faith or will?
The verse itself does not establish that conclusion.
The different words may add a nuance in describing the inward condition and its strengthening. One occurrence, however, cannot establish a definitive system for the whole Qur’an in which fuʾād always handles emotion and qalb always handles decision making.
Both words here concern one person’s inward condition. Fuʾād is described as empty and qalb as strengthened. The different verbs and descriptions are real, but should not all be assigned to a fixed distinction between the nouns themselves.
The verse concerns one person, one anxiety, and one inward condition described with two closely related expressions.
7. Afʾidah: inclination, responsiveness, and distress
Hearts inclining toward Abraham’s family
Ibrāhīm, 14:37
رَبَّنَا إِنِّي أَسْكَنْتُ مِنْ ذُرِّيَّتِي بِوَادٍ غَيْرِ ذِي زَرْعٍ عِنْدَ بَيْتِكَ الْمُحَرَّمِ رَبَّنَا لِيُقِيمُوا الصَّلَاةَ فَاجْعَلْ أَفْئِدَةً مِنَ النَّاسِ تَهْوِي إِلَيْهِمْ وَارْزُقْهُمْ مِنَ الثَّمَرَاتِ لَعَلَّهُمْ يَشْكُرُونَ
“Our Lord, I have settled some of my descendants in an uncultivated valley near Your sacred House. Our Lord, so that they may establish ṣalāh. So cause hearts among the people to incline toward them, and provide them with fruits, so that they may give thanks.”
أَفْئِدَةً (afʾidatan) occurs here in Abraham’s prayer.
Its accompanying verb تَهْوِي (tahwī), from ه و ي (hāʾ–wāw–yāʾ), can express inclination or attraction toward something in this construction.
Inclination toward Abraham’s family comes from tahwī and the sentence’s construction, rather than from F A D itself.
Afʾidah nevertheless shows that the heart can feature in expressing people’s attraction and turning toward people or a place.
مِنَ النَّاسِ (mina al-nāsi) also matters. The verse speaks of hearts among the people; this should not be expanded without grounds to every human being.
The pronoun in إِلَيْهِمْ (ilayhim), “toward them,” refers to people mentioned in the prayer’s context. The sacred House of The God and its location matter, but the plural pronoun should not be referred directly to the building without explanation.
This does not make “performing pilgrimage,” “visiting the House,” or “traveling to Mecca” the lexical meaning of fuʾād. They are contextual subjects, each requiring its own evidence.
Hearts inclining toward deceptive speech
Al-Anʿām, 6:113
وَلِتَصْغَىٰ إِلَيْهِ أَفْئِدَةُ الَّذِينَ لَا يُؤْمِنُونَ بِالْآخِرَةِ وَلِيَرْضَوْهُ وَلِيَقْتَرِفُوا مَا هُمْ مُقْتَرِفُونَ
“So that the hearts of those who do not believe in the Hereafter may incline toward it, and they may be pleased with it and commit what they commit.”
Here too, hearts are associated with inclination.
Unlike Ibrāhīm 14:37, however, the object of inclination is speech described in the preceding verse: embellished, deceptive words that devils among humans and jinn suggest to one another.
تَصْغَىٰ (taṣghā) concerns inclining and listening attentively.
The verse therefore shows the connection between receiving speech, inward inclination, and accepting it.
This matters because hearts do not occur only in contexts of faith or inclination toward truth. Those who do not believe in the Hereafter can also incline toward deceptive speech.
Fuʾād is therefore not inherently a positively valued moral term.
In Ibrāhīm 14:37, hearts’ inclination occurs in a prayer concerning Abraham’s family; in Al-Anʿām 6:113, the same field of inclination concerns deceptive speech.
The value and direction of these inclinations come from their contexts and objects, rather than from a fixed meaning of fuʾād.
Hearts and sights being turned
Al-Anʿām, 6:110
وَنُقَلِّبُ أَفْئِدَتَهُمْ وَأَبْصَارَهُمْ كَمَا لَمْ يُؤْمِنُوا بِهِ أَوَّلَ مَرَّةٍ وَنَذَرُهُمْ فِي طُغْيَانِهِمْ يَعْمَهُونَ
“We turn their hearts and sights, just as they did not believe in it the first time, and leave them in their transgression, wandering blindly.”
أَفْئِدَتَهُمْ (afʾidatahum), “their hearts,” accompanies أَبْصَارَهُمْ (abṣārahum), “their sights.”
نُقَلِّبُ (nuqallibu) means turning or changing. Change is therefore not itself part of fuʾād’s meaning, but an action occurring upon it.
The verse also connects this with their earlier denial. Turning their hearts and sights should consequently not be detached completely from their conduct.
Nor does the verse make “inner eye” the lexical meaning of afʾidah. It places two distinct words alongside one another, and each should be recognized in its actual form.
Fuʾād can therefore undergo change, but its manner and direction come from the complete sentence.
Empty hearts in the scene of resurrection
Ibrāhīm, 14:43
مُهْطِعِينَ مُقْنِعِي رُءُوسِهِمْ لَا يَرْتَدُّ إِلَيْهِمْ طَرْفُهُمْ وَأَفْئِدَتُهُمْ هَوَاءٌ
“Hurrying, with heads raised, their gaze not returning to them, and their hearts empty.”
This verse describes a scene of terror at resurrection.
أَفْئِدَتُهُمْ هَوَاءٌ (afʾidatuhum hawāʾun) is figurative language. هَوَاء (hawāʾ), “air,” evokes emptiness here, as though their hearts had been emptied of steadiness and composure.
In a context of fear, this can convey intense distress and an inability to gather one’s thoughts.
It should not be taken to mean the physical destruction of the heart or its transformation into actual air.
Nor does it establish that all hearts are inherently hollow or naturally function as containers for a particular substance.
In Al-Qaṣaṣ 28:10, the heart of Moses’ mother became fārigh, “empty”; here, hearts are described as hawāʾ. Both approach emptiness under intense emotion, but their contexts and constructions differ.
Al-Qaṣaṣ concerns a mother’s anxiety for her child; Ibrāhīm describes the terror of resurrection.
8. Mā kadhaba al-fuʾādu mā raʾā: the heart and what was seen
Al-Najm, 53:11
مَا كَذَبَ الْفُؤَادُ مَا رَأَىٰ
“The heart did not lie concerning what it saw.”
Although short, this verse matters greatly for the relationship between fuʾād, seeing, and perception.
The nearby verses concern an event involving revelation and observation. The verse then states that the heart did not lie concerning what was seen.
Does the heart itself see?
رَأَىٰ (raʾā) concerns seeing. Seeing with the eyes, inward perception, and judging what has been seen nevertheless require distinction. In grammatical analyses, the subject of raʾā can refer to the recipient of revelation or to the heart. Fuʾād being the subject of كَذَبَ (kadhaba) does not by itself establish it as necessarily the subject of raʾā too.
Attributing seeing to the heart has a history in Arabic. Abū Dhuʾayb’s verse likewise says رَآهَا الْفُؤَادُ (raʾāhā al-fuʾādu), “the heart saw her.”
Such an attribution is therefore neither impossible nor unprecedented in Arabic.
This verse alone does not establish that fuʾād has an independent, nonphysical eye that sees images like the bodily eye.
Nor should the object of the vision be settled without examining the context, or restricted directly to seeing The God, an angel, or another reality.
The sentence itself expresses the heart’s relationship with the truthfulness of what was seen.
Kadhaba and kadhdhaba
The transmission of Ḥafṣ from ʿĀṣim has كَذَبَ (kadhaba), with an undoubled dhāl. Abū Jaʿfar and Hishām’s transmission from Ibn ʿĀmir read كَذَّبَ (kadhdhaba), with doubled dhāl. The remaining readings among the ten canonical readings leave the dhāl undoubled here.
Linguistically, lying must be distinguished from declaring something false. The undoubled form here has been analyzed as not lying about what was seen or not treating it as contrary to reality; the doubled form more explicitly negates declaring it false. The reading distinction should be preserved without restricting all semantic analyses of the undoubled form to one translation.
For a basic translation, “the heart did not lie concerning what it saw” suits one lexical analysis. “The heart did not deny what it saw” is another way of expressing the meaning under discussion, with clearer morphological support in the doubled reading. The renderings should not be treated as completely identical without regard to reading and grammatical analysis.
In either case, the verse connects the heart with the truth of what was perceived.
Beyond fear or longing, fuʾād can therefore concern knowledge and judgment about the truth of a perception.
9. Fire that reaches the hearts
Al-Humazah, 104:7
الَّتِي تَطَّلِعُ عَلَى الْأَفْئِدَةِ
“That fire which reaches the hearts.”
This follows the description of الْحُطَمَة (al-ḥuṭamah), the fire named in the preceding verse نَارُ اللَّهِ الْمُوقَدَةُ (nāru Allāhi al-mūqadatu), “the kindled fire of The God.”
The hearts here are what the fire reaches.
The proximity to the root’s lexical field of heat and burning may attract attention. That resemblance must nevertheless be distinguished from the verse’s direct meaning.
الْأَفْئِدَة (al-afʾidah) remains the plural of fuʾād. The fire is identified through the preceding verses’ words and context, rather than through this noun itself.
The lexical connection with heat does not make the verse mean “fire reaching fire,” or fuʾād an inner flame.
Nor should the punishment scene be reduced to psychological suffering, guilt, or emotional burning. The Qur’an itself speaks of fire.
Conversely, its physical effect upon the hearts is not fully described. A definite theory of how organs burn or how the Hereafter is structured cannot therefore be constructed from it.
“Hearts” is appropriate here, understood in connection with the fire and the context of punishment.
11. Is fuʾād always good or always truthful in the Qur’an?
One important result of studying this root is that fuʾād is not presented as inherently having a fixed moral orientation.
Muḥammad’s heart is strengthened in Hūd 11:120 and Al-Furqān 25:32. In Al-Najm 53:11, it is connected with the truthfulness of perception.
In Al-Anʿām 6:113, however, the hearts of those who do not believe in the Hereafter incline toward deceptive speech. Al-Anʿām 6:110 also speaks of turning the hearts and sights of those who did not believe the first time.
In Al-Aḥqāf 46:26, possessing hearts did not prevent denial of the signs or an unhappy outcome.
Its lexical definition therefore does not make fuʾād invariably the seat of truth or guarantee that everything arising from it is correct.
Nor is it inherently misleading or an obstacle to knowledge.
Fuʾād forms part of the description of a living being’s capacities and inward condition. Whether perception is right or wrong, the direction of inclination, and the result of action are understood from context and the person’s conduct.
This matters for translation. Translating fuʾād from the outset as “pure conscience,” “divine reason,” or “true feeling” would impose a positive, restricted meaning on all its uses.
The simple “heart” reduces that problem, allowing each verse to clarify its particular condition.
12. Translation recommendations for Forqan
For فُؤَاد (fuʾād) and its plural أَفْئِدَة (afʾidah), the proposed basic equivalents are “heart” and “hearts.”
Their Persian equivalents are natural and have a broader semantic field than “brain,” “reason,” “emotions,” or “conscience.”
The contextual explanation should clarify the differences between particular verses.
In Al-Naḥl 16:78, Al-Muʾminūn 23:78, Al-Sajdah 32:9, and Al-Mulk 67:23, retain “hearts” alongside hearing and sight. The explanation can discuss its relationship with human perception, understanding, and responsiveness.
In Al-Isrāʾ 17:36, “heart” is appropriate, with an explanation of its place in the field of knowledge and accountability.
In Hūd 11:120 and Al-Furqān 25:32, fuʾādaka is naturally rendered “your heart.” Firmness comes from نُثَبِّتُ (nuthabbitu), rather than from fuʾād itself.
In Al-Qaṣaṣ 28:10, “the heart of Moses’ mother became empty” follows the wording closely. Anxiety and distress belong in the contextual explanation; fārighan should not be restricted without grounds to a particular psychological condition.
In Ibrāhīm 14:37, “hearts among the people” is suitable. Inclination comes from تَهْوِي (tahwī), so afʾidah itself should not be changed into “lovers,” “pilgrims,” or “eager people.”
In Ibrāhīm 14:43, “their hearts are empty” preserves the main image. Fear and distress come from the complete context.
In Al-Anʿām 6:113, “the hearts of those who do not believe in the Hereafter” is suitable. The direction of inclination comes from تَصْغَىٰ (taṣghā), and its object from the preceding verse.
In Al-Anʿām 6:110, “We turn their hearts and sights” is clear. Turning is the meaning of نُقَلِّبُ (nuqallibu).
In Al-Najm 53:11, “the heart did not lie concerning what it saw” follows the wording closely. Recognized differences concerning the verbal construction and the subject of seeing should be discussed separately.
In Al-Aḥqāf 46:26, retain “hearts” in both occurrences. The failure to benefit comes from فَمَا أَغْنَىٰ (fa-mā aghnā).
In Al-Humazah 104:7, “hearts” is appropriate. The fire and its reaching the hearts come from the context and تَطَّلِعُ (taṭṭaliʿu).
Word-by-word boxes need not incorporate the entire root analysis into a short translation. “Fuʾād: heart” and “afʾidah: hearts” suffice for the basic sense, followed by a brief explanation of the particular verse’s contextual meaning.
Where a particular argument depends on distinguishing fuʾād and qalb, both Arabic forms can be retained and the proposed distinction explained with evidence. Ordinary translation should not call one “brain” and the other “physical heart” merely to manufacture a difference.
13. Conclusion
Arabic F A D concerns heat and burning, and fuʾād, “heart,” belongs to the same family. Explaining its name through heat and burning has a history in Arabic lexical tradition, but that explanation alone does not establish the word’s definite historical origin.
The Qur’an uses the root only in fuʾād and afʾidah. Its uses show the heart alongside hearing and sight, connected with perception and judgment, inclining toward something, distressed by anxiety or terror, and strengthened through the divine message.
This breadth prevents restricting it to emotions, reason, conscience, or one particular anatomical organ.
Its distinction from qalb likewise needs caution. Both words occur for Moses’ mother in Al-Qaṣaṣ 28:10, but their association alone does not establish fuʾād as always the seat of emotion and qalb always the seat of thought or faith.
Conversely, they should not be made completely synonymous without grounds. Word choice, sentence construction, and accompanying descriptions can give each occurrence a particular meaning.
For Forqan, “heart” is the most appropriate basic equivalent for fuʾād: a heart that Qur’anic usage can connect with reception, understanding, inclination, responsiveness, and steadfastness.
These features should not all be built into its lexical definition. Some arise from established usage of the word itself; others come from the verbs, descriptions, and contexts.
Mentioning fuʾād in the Qur’an does not itself guarantee its truthfulness or declare it misguided. It is neither always calm nor always burning. Its basic meaning is heart; each verse shows the condition and relationship in which that heart occurs.