The Qur’anic Root Ṣ D ʿ (صَدَعَ)

1. Introduction and semantic field

The three-letter Arabic root Ṣ D ʿ concerns splitting and the appearance of a break in something. Its clear physical image is a fissure appearing in stone, a wall, a vessel, or the ground. Something previously continuous opens up, or parts of it separate.

Arabic does not restrict this meaning to physical objects. Members of a group separating, opening a path through a landscape, dawn appearing, speaking plainly, and severe headache also belong to this family’s uses.

The root occurs five times in the Qur’an, in five different forms: فَاصْدَعْ, يَصَّدَّعُونَ, يُصَدَّعُونَ, مُتَصَدِّعًا, and الصَّدْعِ.

Despite their lexical relationship, these uses do not have an identical meaning. One verse commands the open proclamation of a message; another concerns people separating on the day of return; another, the absence of headache; and two concern the splitting of the earth and a mountain.

The family’s shared core can be described as breaking continuity and producing a fissure or separation. Translation, however, must respect each derivative’s established meaning and the sentence’s subject. Splitting stone, people separating, and openly speaking are related linguistically, but do not take one identical verb in Persian.

2. Semantic core and important forms

Splitting and opening something previously continuous

In Maqāyīs al-Lughah, Ibn Fāris introduces the root’s core as follows:

الصَّادُ وَالدَّالُ وَالْعَيْنُ أَصْلٌ صَحِيحٌ يَدُلُّ عَلَى انْفِرَاجٍ فِي الشَّيْءِ

al-ṣādu wa-al-dālu wa-al-ʿaynu aṣlun ṣaḥīḥun yadullu ʿalā infirājin fī al-shayʾi

“Ṣād, dāl, and ʿayn have one sound principle, indicating an opening in something.”

Infirāj is significant here. The meaning is not simply breaking and destroying, but an opening appearing in something whose parts were previously connected.

Thus Arabic says صَدَعْتُهُ فَانْصَدَعَ: “I split it, and it split open.”

This meaning is clear in stone, glass, walls, and other hard objects. A crack may appear without the object splitting completely in two; alternatively, it may separate the object’s parts. Both belong to the root’s field.

Maqāyīs al-Lughah: the definition and extensions of Ṣ D ʿ

Important Arabic forms

صَدَعَ يَصْدَعُ is Form I: it means to split, pass through, separate, or, in speech, state openly and plainly. Its imperative اِصْدَعْ occurs in the Qur’an.

صَدْع is a verbal noun and a noun concerning splitting or a fissure. It also names a crack in stone, ground, a wall, or another object. This form occurs in the Qur’an.

صَدَّعَ is Form II and can mean causing a fissure, separating, or causing headache. Its imperfect passive يُصَدَّعُونَ occurs in the Qur’an.

اِنْصَدَعَ is Form VII, meaning to split open or come apart. This verb itself does not occur in the Qur’an.

تَصَدَّعَ is Form V, meaning to crack, split apart, or disperse. Its active participle مُتَصَدِّع and assimilated imperfect يَصَّدَّعُونَ occur in the Qur’an.

صَادِع is the Form I active participle. It can describe something splitting or separating, or someone speaking openly and plainly. This form itself does not occur in the Qur’an.

صَدِيع in lexical use can describe something split, a portion separated from a whole, or dawn opening the night’s darkness.

صِدْعَة denotes a separated portion. In livestock terminology, it also describes a group separated from a herd.

صُدَاع names headache. It is an established Arabic word, but the noun ṣudāʿ itself does not occur in the Qur’an; the Qur’an uses the verb يُصَدَّعُونَ.

مَصْدُوع and مُصَدَّع describe a person or thing that has been split or, when applied to a person, suffers from headache.

These forms show that Ṣ D ʿ has transitive and intransitive verbs, as well as nouns expressing the result of splitting or separation. Morphological distinctions require examination, but do not by themselves establish intensity, intention, or the number of fissures without supporting context.

Physical imagery: cracking stone and opening a path

Imagine a stone developing a fissure under pressure or a blow. The stone may remain in one piece, but a line of discontinuity becomes visible.

If the fissure extends, the stone may separate into two or more pieces.

In both cases, ṣadʿ concerns a break appearing. Splitting does not always mean complete destruction.

Another image is movement through reeds or dense vegetation. When a person or animal passes through, the plants part and a path opens between them.

This image helps explain the Arabic expression صَدَعَ الْفَلَاةَ: passing through or traversing the desert.

Here, the ground need not split geologically. The expression concerns cutting a path and passing through an expanse.

3. Older Arabic witnesses and extensions of meaning

Splitting and passing through: Labīd’s witness

The Muʿallaqah of Labīd ibn Rabīʿah, a poet who lived across the pre-Islamic and Islamic periods and whose ode belongs to the pre-Islamic poetic tradition, contains:

فَتَوَسَّطَا عُرْضَ السَّرِيِّ وَصَدَّعَا
مَسْجُورَةً مُتَجَاوِرًا قُلَّامُهَا

fa-tawassaṭā ʿurḍa al-sariyyi wa-ṣaddaʿā / masjūratan mutajāwiran qullāmuhā

“They reached the midst of the stream from its side and made their way through a full pool, with its surrounding plants growing close together.”

This passage describes two animals moving toward water.

Al-sariyy means a stream or small watercourse. Masjūrah here describes a pool filled with water, and qullām names a kind of plant.

The verb ṣaddaʿā indicates that the two animals opened a path through the vegetation and pool, or parted and traversed it.

Here, splitting extends to movement through something. It is unnecessary to imagine the animals dividing water or earth as though it were hard stone.

Classical commentaries on Labīd’s Muʿallaqah transmit variants in some words of this verse of poetry, but ṣaddaʿā’s use for opening a way is clear.

Commentary on Labīd’s Muʿallaqah: opening a path

Friends and groups separating

Arabic uses تَصَدَّعَ الْقَوْمُ for people separating and dispersing.

The use retains the image of a break, but its subject is no longer a hard object. A group formerly together now separates.

A poem attributed to Mutammim ibn Nuwayrah, mourning his brother Mālik, says:

وَكُنَّا كَنَدْمَانَيْ جَذِيمَةَ حِقْبَةً
مِنَ الدَّهْرِ حَتَّى قِيلَ لَنْ يَتَصَدَّعَا

wa-kunnā ka-nadmānay jadhīmata ḥiqbatan / mina al-dahri ḥattā qīla lan yataṣaddaʿā

“For a time we were like Jadhīmah’s two companions, until it was said that they would never part.”

Here, yataṣaddaʿā concerns two people separating, rather than a physical object splitting.

The poem is attributed to Mutammim, a poet near the beginning of the Islamic period. Its old Arabic alone does not make it evidence predating Qur’anic revelation. Its value lies in illustrating the use for separation in older Arabic.

Tāj al-ʿArūs: Mutammim’s witness and assimilation in yaṣṣaddaʿūna

Taṣaddaʿa al-qawm can also describe a gathering ending, as when people go their separate ways after a meeting.

Taṣadduʿ applied to people therefore need not mean conflict or hostility. Separation may occur without fighting. Its cause and value depend on context.

Splitting and openly declaring speech

Arabic uses صَدَعَ بِالْحَقِّ for declaring the truth openly and plainly.

Here, the speaker does not conceal the statement but expresses it clearly.

خَطِيبٌ مِصْدَعٌ is also recorded for an orator who is direct, capable, and bold in speech.

The connection with splitting is intelligible: just as an opening in a covering reveals what was concealed, openly expressed speech emerges from concealment.

Nevertheless, this figurative explanation should not become a definitive theory about the historical origin of “speaking openly.” The sense is an established Arabic use in its own right; understanding it does not require imagining a physical object splitting in every sentence.

Ibn Fāris and other classical lexicographers record openly declaring the truth within this semantic family.

Dawn: the opening of darkness

Another use of this family is al-ṣadīʿ for dawn.

As morning light appears, the night’s darkness gradually recedes. Figurative Arabic expresses this through darkness being split open.

The expression اِنْصَدَعَ الصُّبْحُ likewise refers to dawn appearing.

The splitting here is not a material, physical act. Morning does not split a wall; light appears across an expanse previously dark.

The imagery relates to nearby roots such as F L Q and F J R, without making them fully interchangeable.

Ṣudāʿ: headache

صُدَاع in Arabic means headache.

Traditional explanations compare the pain to parts of the head splitting or coming apart.

The image does not mean that headache actually results from the skull or brain tissue splitting. The word expresses pain and discomfort, rather than their medical mechanism.

صُدِّعَ الرَّجُلُ likewise describes a person developing a headache.

This use matters for Al-Wāqiʿah 56:19, where a Form II passive verb appears in a context of drink.

Lisān al-ʿArab and Tāj al-ʿArūs: derivatives, separation, plain speech, and headache

4. Qur’anic uses

A. فَاصْدَعْ بِمَا تُؤْمَرُ: speaking openly and plainly

The first occurrence examined is in Al-Ḥijr:

فَاصْدَعْ بِمَا تُؤْمَرُ وَأَعْرِضْ عَنِ الْمُشْرِكِينَ

fa-iṣdaʿ bi-mā tuʾmaru wa-aʿriḍ ʿani al-mushrikīna

“So proclaim openly what you are commanded, and turn away from those who associate partners.”

Al-Ḥijr 15:94

فَاصْدَعْ is a Form I imperative addressed to the Prophet.

In established Arabic use, ṣadaʿa bi-al-amr concerns making something known and stating it plainly.

Here, the verb is accompanied by بِمَا تُؤْمَرُ. Mā refers to what the Prophet is commanded, while the preposition bāʾ connects it with iṣdaʿ.

The command is therefore to state openly and plainly what the Prophet has been instructed.

Speaking openly and compelling others are different

This use should not become “split the people,” “create hostility among them,” or “force them to accept the message.”

The command’s direct concern is مَا تُؤْمَرُ: what the Prophet is instructed to convey.

Iṣdaʿ in this construction indicates open declaration and plainness, rather than forcing an audience to accept.

The verse continues وَأَعْرِضْ عَنِ الْمُشْرِكِينَ. The next verse, Al-Ḥijr 15:95, speaks of The God’s sufficiency against those who mock.

This context places the command to proclaim openly amid opposition and mockery.

Nevertheless, the entire setting should not be inserted into the root’s meaning. Ṣadʿ alone means neither enduring mockery nor turning away from those who associate partners; those meanings come from other parts of the discourse.

Plainness and clarity of the message

In this use, openly expressed speech differs from speech kept hidden.

Someone may know a truth but refrain from expressing it for fear of others’ reactions. Iṣdaʿ here highlights not concealing the message and declaring it openly.

Plainness is not verbal violence. Someone can speak clearly and candidly without insults, humiliation, or harshness.

“Proclaim openly” or “declare plainly” is therefore more suitable here than equivalents suggesting physical splitting or violent confrontation.

B. يَصَّدَّعُونَ: people separating on the day of return

Al-Rūm says:

فَأَقِمْ وَجْهَكَ لِلدِّينِ الْقَيِّمِ مِنْ قَبْلِ أَنْ يَأْتِيَ يَوْمٌ لَا مَرَدَّ لَهُ مِنَ اللَّهِ ۖ يَوْمَئِذٍ يَصَّدَّعُونَ

fa-aqim wajhaka li-al-dīni al-qayyimi min qabli an yaʾtiya yawmun lā maradda lahu mina allāhi yawmaʾidhin yaṣṣaddaʿūna

“So set your face toward the upright way, before a day comes from The God that cannot be turned back; on that day they will separate.”

Al-Rūm 30:43

يَصَّدَّعُونَ is Form V. Its underlying form is يَتَصَدَّعُونَ, with the tāʾ assimilated into the adjacent ṣād.

The verb concerns people separating and dispersing.

Its application to a group of people does not mean that their bodies crack. Splitting has extended to groups separating.

The following verses, especially Al-Rūm 30:44 and Al-Rūm 30:45, distinguish those who reject from those who believe and do what is right.

Separation in verse 43 therefore relates to differences in people’s eventual outcomes.

The verb yaṣṣaddaʿūna itself, however, does not mean going to the Garden or the Fire. That identification comes from context and other verses.

Nor does separation necessarily mean that people fight on that day. The verb means parting; other verses clarify what becomes of the groups.

C. لَا يُصَدَّعُونَ عَنْهَا: the absence of headache

After describing the drink of the people of the Garden, Al-Wāqiʿah says:

لَا يُصَدَّعُونَ عَنْهَا وَلَا يُنْزِفُونَ

lā yuṣaddaʿūna ʿanhā wa-lā yunzifūna

“They suffer no headache from it, nor become intoxicated and deprived of reason.”

Al-Wāqiʿah 56:19

The preceding verse, Al-Wāqiʿah 56:18, mentions cups, pitchers, and a goblet of flowing drink. The pronoun in ʿanhā in verse 19 therefore refers to that drink.

يُصَدَّعُونَ is an imperfect passive verb of Form II.

Applied to people, the verb can mean suffering headache.

Here, the concern is neither a group separating nor a material object splitting. The drink and the adjacent وَلَا يُنْزِفُونَ indicate unpleasant effects of drinking.

Why is headache the appropriate sense?

Ṣudāʿ in Arabic names headache, and the verb ṣuddiʿa belongs to the same field.

لَا يُصَدَّعُونَ عَنْهَا therefore naturally means that the drink gives them no headache.

The meaning follows from established usage and the context of drink, rather than from a medical account of the head splitting.

وَلَا يُنْزِفُونَ is a separate verb from N Z F. In a drinking context it has been associated with losing balance or cognitive ability; some readings and lexical explanations also discuss the drink running out.

In the reading examined in this article, the Form II passive construction and the context of drink support headache as the meaning of يُصَدَّعُونَ. The second verb requires separate discussion.

For the base translation of the reading under discussion, “they suffer no headache from it” therefore has clearer support. Nevertheless, “they do not part from it” is also transmitted in some classical sources and relates to discussions of readings such as the form attributed to Mujāhid. It should not be dismissed as unsupported, nor should differences of reading and analysis be ignored.

Al-Kashshāf: headache and transmitted readings concerning separation

D. مُتَصَدِّعًا: a mountain splitting apart

Al-Ḥashr says:

لَوْ أَنْزَلْنَا هَٰذَا الْقُرْآنَ عَلَىٰ جَبَلٍ لَرَأَيْتَهُ خَاشِعًا مُتَصَدِّعًا مِنْ خَشْيَةِ اللَّهِ ۚ وَتِلْكَ الْأَمْثَالُ نَضْرِبُهَا لِلنَّاسِ لَعَلَّهُمْ يَتَفَكَّرُونَ

law anzalnā hādhā al-qurʾāna ʿalā jabalin la-raʾaytahu khāshiʿan mutaṣaddiʿan min khashyati allāhi wa-tilka al-amthālu naḍribuhā li-al-nāsi laʿallahum yatafakkarūna

“Had We sent this Qur’an down upon a mountain, you would have seen it humbled and splitting apart from awe of The God. We set forth these examples for people so that they may reflect.”

Al-Ḥashr 59:21

مُتَصَدِّعًا is a Form V active participle, describing something splitting or coming apart.

The description refers to jabal, a mountain.

In the sentence, خَاشِعًا and مُتَصَدِّعًا both describe the mountain’s state. Khushūʿ comes from KH SH ʿ, while taṣadduʿ comes from Ṣ D ʿ.

Their juxtaposition does not make the descriptions fully synonymous.

Khushūʿ concerns humility and yielding before greatness, whereas taṣadduʿ concerns splitting and coming apart.

The mountain image and its role

In human experience, a mountain is a clear image of physical solidity, size, and stability.

Describing it as humbled and splitting before the greatness of divine speech produces a powerful image of that solid body breaking apart.

The construction nevertheless matters fundamentally. The sentence begins لَوْ أَنْزَلْنَا and ends by saying وَتِلْكَ الْأَمْثَالُ نَضْرِبُهَا لِلنَّاسِ.

It therefore offers a hypothetical example for human reflection. Without evidence, it should not become a historical report of a particular mountain collapsing.

Conversely, figurative illustration does not make mutaṣaddiʿ mean something unrelated, such as being emotionally moved.

The verse’s image rests on the mountain splitting apart, while conveying a meaning beyond a natural occurrence.

Does it mean splitting the human heart?

The verse does not directly speak of splitting the human heart.

Nevertheless, its ending لَعَلَّهُمْ يَتَفَكَّرُونَ shows that the example is offered for people to reflect.

Comparing the solid mountain with the human being can suggest that encountering divine speech is serious and should not leave a person indifferent.

Mutaṣaddiʿ itself, however, does not mean believing, repenting, or reflecting. Those possible implications come from the example’s purpose and the broader context.

The lexical sense should remain “splitting apart” or “riven.”

E. الْأَرْضِ ذَاتِ الصَّدْعِ: the earth possessing fissures

Al-Ṭāriq says:

وَالسَّمَاءِ ذَاتِ الرَّجْعِ

wa-al-samāʾi dhāti al-rajʿi

“By the sky possessing return.”

Al-Ṭāriq 86:11

وَالْأَرْضِ ذَاتِ الصَّدْعِ

wa-al-arḍi dhāti al-ṣadʿi

“And by the earth possessing fissures.”

Al-Ṭāriq 86:12

إِنَّهُ لَقَوْلٌ فَصْلٌ

innahu la-qawlun faṣlun

“Indeed, it is a decisive, distinguishing word.”

Al-Ṭāriq 86:13

In verse 12, al-ṣadʿ is a noun referring to splitting or a fissure.

Dhāt likewise indicates that the earth is described as possessing this quality.

One familiar application of ṣadʿ to the earth concerns its opening as plants grow. A seed sprouts and the plant emerges through the soil. In this image, the ground splits and vegetation comes forth.

Classical dictionaries and commentaries also record this explanation of the verse.

Al-Ṭabarī: the earth opening and plant growth

Does ṣadʿ itself mean vegetation here?

Some lexical explanations gloss ṣadʿ in this context with nabāt, vegetation.

The root’s direct meaning should nevertheless be distinguished from the referent identified in the verse.

Ṣadʿ’s basic meaning is splitting. Plant growth is one event that can make soil open.

Consequently, “the earth possessing fissures” can, in view of the context and Arabic usage, be understood as including plant growth among its clear referents.

Rendering dhāt al-ṣadʿ directly as “the earth possessing plants,” however, removes the image of splitting contained in the word itself.

It is therefore preferable to retain “possessing fissures” in translation and explain its relationship with plant growth in the reflection.

The relationship between rajʿ and ṣadʿ

The preceding verse describes the sky through rajʿ. This word concerns return in Arabic and also names rain in some older uses.

Study of R J ʿ

If rajʿ is associated with rain here, its pairing with the earth possessing fissures can evoke rainfall and growth.

This relationship, however, should not become the sole possible reading without examining rajʿ.

In any event, ṣadʿ applied to the earth has a perceptible image: ground can crack and open, with things emerging through it.

Is the verse about geological faults?

The earth’s fissures occur in different natural forms, from soil cracks to larger openings in the crust.

The expression dhāt al-ṣadʿ itself, however, specifies neither a fissure’s size or cause nor a particular geological mechanism.

Identifying it definitively with one kind of fault, plate movement, or a particular scientific phenomenon therefore exceeds the word’s direct indication.

Nor can the interpretation concerning plant growth be dismissed simply because modern geology recognizes other fissures.

Linguistic meaning should remain independent of a desire for scientific correspondence.

5. Semantic relationships and differences among the Qur’anic forms

The five uses can be examined within three broad fields.

Physical splitting

In Al-Ḥashr 59:21, mutaṣaddiʿan describes a mountain.

In Al-Ṭāriq 86:12, al-ṣadʿ describes a quality of the earth.

Both highlight the image of splitting and breaking a physical object’s continuity.

There is nevertheless a difference. In Al-Ḥashr, the mountain’s splitting belongs to a hypothetical illustration of the Qur’an’s greatness; Al-Ṭāriq describes the earth as possessing fissures.

A shared root therefore does not make the verses’ subjects or rhetorical functions identical.

Separation and open declaration

In Al-Rūm 30:43, yaṣṣaddaʿūna concerns people separating.

In Al-Ḥijr 15:94, fa-iṣdaʿ concerns openly and plainly declaring what is commanded.

A semantic relationship can be perceived between them: both involve continuity or concealment giving way.

Their difference is nevertheless clear. In one, people part; in the other, speech is expressed openly and plainly.

Translating both simply as “split” is therefore neither natural nor precise.

Pain and harm

In Al-Wāqiʿah 56:19, yuṣaddaʿūna concerns suffering headache.

The image of splitting belongs to ṣudāʿ’s linguistic history, but here the word names an established painful condition.

Translating it as “their heads are not split” rather than “they suffer no headache” changes the sentence’s natural meaning.

Here, established usage takes precedence over retaining the root’s image literally.

6. Distinctions from related roots

Ṣ D ʿ (صَدَعَ) and SH Q Q (شَقَّ): fissures and splitting

Study of SH Q Q

Ṣ D ʿ and SH Q Q are clearly close within the field of splitting.

Shaqq in Arabic can mean splitting, dividing in two, or making a cut. Ṣadʿ in physical use likewise concerns a crack or fissure.

ʿAbasa 80:26 says:

ثُمَّ شَقَقْنَا الْأَرْضَ شَقًّا

thumma shaqaqnā al-arḍa shaqqan

“Then We split the earth in a splitting.”

ʿAbasa 80:26

The following verses speak of grain, grapes, plants, and other vegetation growing.

This matters for Al-Ṭāriq 86:12: the Qur’an itself also associates the earth’s opening with plant growth.

Shaqq and ṣadʿ are nevertheless not fully interchangeable in every use. Shaqq has a broad field of splitting and separating; ṣadʿ emphasizes cracks, breaks, and openings, and has independent uses for plain speech and headache.

Ṣ D ʿ (صَدَعَ) and F L Q (فَلَقَ): splitting and opening

Study of F L Q

Falq likewise concerns splitting and opening apart.

In Al-Anʿām 6:95, The God is described as splitting grain and kernels. Al-Anʿām 6:96 uses فَالِقُ الْإِصْبَاحِ for dawn appearing.

These uses resemble ṣadʿ’s imagery of opening earth and emerging dawn.

The resemblance does not make the roots identical in all their forms.

Falq in its Qur’anic uses can express splitting and opening. Ṣadʿ, besides physical splitting, also concerns people separating, plainly proclaiming a message, and headache.

Ṣ D ʿ (صَدَعَ) and F R Q (فَرَقَ): separation and distinction

Study of F R Q

Farq concerns separating, distinguishing, and becoming distinct from one another.

Al-Rūm 30:14 uses يَتَفَرَّقُونَ for people separating on the day the Hour arises.

Al-Rūm 30:43 uses يَصَّدَّعُونَ.

Their subjects are similar: people separate on the day of return.

Semantic proximity does not require inventing two wholly different, fixed kinds of separation for them.

Farq emphasizes parting and becoming distinct, while ṣadʿ retains the background image of a break and opening apart.

Both can refer here to groups of people separating. Any precise distinction highlighted in translation would need support from the verse’s construction and further evidence.

Ṣ D ʿ (صَدَعَ) and F Ṣ L (فَصَلَ): splitting and clear separation

Study of F Ṣ L

Faṣl in Arabic concerns separating and establishing the boundary between things.

In judgment and speech, this extends to distinguishing truth from falsehood or making a decisive statement.

Immediately after the description of the earth possessing ṣadʿ, Al-Ṭāriq 86:13 speaks of قَوْلٌ فَصْلٌ.

This proximity helps examine the surah’s images, but does not establish that ṣadʿ and faṣl necessarily mean the same thing in these verses.

Ṣadʿ describes the earth’s quality; faṣl describes speech.

Nor does their occurrence in consecutive verses alone establish that the earth’s fissures symbolize separating truth from falsehood. Such a reading needs further evidence.

Ṣ D ʿ (صَدَعَ), J H R (جَهَرَ), and B Y N (بَانَ)

Study of J H R; Study of B Y N

This comparison helps explain فَاصْدَعْ بِمَا تُؤْمَرُ.

Jahr concerns openness, speaking audibly and openly, or being unconcealed.

Bayān concerns making meaning clear and evident.

Ṣadʿ in speech concerns expressing it plainly and openly.

All three can coincide: someone expresses a statement clearly, openly, and plainly.

Ṣadʿ nevertheless does not necessarily mean shouting, nor does bayān necessarily mean creating separation among people.

“Proclaim openly and plainly” therefore suits Al-Ḥijr 15:94: it conveys ṣadʿ’s contextual meaning without imposing loudness or verbal violence on the verse.

7. Morphological and grammatical points

فَاصْدَعْ: a command to proclaim plainly

فَاصْدَعْ consists of fa- and the imperative اِصْدَعْ.

It is Form I, accompanied in Al-Ḥijr by بِمَا تُؤْمَرُ.

The construction emphasizes openly and plainly proclaiming what is commanded.

Semantically, this is an established Arabic expression. It need not first be translated “split,” followed by an explanation that speech is intended.

يَصَّدَّعُونَ: the assimilated Form V

يَصَّدَّعُونَ in Al-Rūm 30:43 comes from يَتَصَدَّعُونَ.

The Form V tāʾ changes beside ṣād and assimilates into it.

The surface form yaṣṣaddaʿūna should therefore not lead to classifying the verb as Form II.

It is Form V and concerns people themselves separating in this context.

يُصَدَّعُونَ: the passive Form II verb

In Al-Wāqiʿah 56:19, يُصَدَّعُونَ begins with ḍammah and is passive Form II.

The people receive the effect in this construction: they suffer headache.

It differs from yaṣṣaddaʿūna in Al-Rūm, although both share a root and may look similar to an unfamiliar reader in unvocalized writing.

Morphology and context are decisive: one concerns headache, the other people separating.

مُتَصَدِّعًا: the Form V active participle

مُتَصَدِّعًا in Al-Ḥashr 59:21 is the Form V active participle.

It describes the mountain’s state, expressing its splitting or coming apart.

Because the verse begins with law, the description belongs to a hypothetical, illustrative image.

The hypothetical construction does not change mutaṣaddiʿ’s lexical meaning.

الصَّدْعِ: the noun for a fissure

In Al-Ṭāriq 86:12, الصَّدْعِ is the genitive complement of ذَاتِ.

Dhāt al-ṣadʿ describes the earth’s quality: earth possessing fissures.

The expression itself does not determine the kind of fissure or what causes it.

8. Challenges in understanding and translation

A difficulty with this root is that the physical image of splitting underlies its uses but does not always provide the word’s final translation.

Translating fa-iṣdaʿ simply as “split” loses the established meaning of plainly proclaiming.

Translating yaṣṣaddaʿūna in Al-Rūm as “they develop cracks” turns human groups separating into a physical image the verse does not require.

Rendering lā yuṣaddaʿūna ʿanhā in the reading under discussion as “they do not part from it” sets aside the headache sense supported by the verb’s construction and drinking context. Its transmission in some sources requires examination alongside each source’s discussion of reading and analysis.

Translating mutaṣaddiʿan merely as “affected” removes the image of the mountain splitting.

Immediately translating dhāt al-ṣadʿ as “possessing plants” replaces the word’s image of the earth opening with a proposed referent.

These examples show that fidelity to a root does not mean imposing one fixed Persian equivalent on all its derivatives.

Root research should identify the shared core, while each verse’s translation follows its morphological form and context.

Splitting and separation are not inherently positive or negative morally. Earth opening for plants can enable life; the mountain splitting in Al-Ḥashr illustrates divine speech’s greatness; people separating on the day of return concerns their different outcomes; and the Prophet’s plain proclamation concerns conveying the message.

Each use’s value and function should therefore be understood from its own verse.

9. Translation proposals for Forqan

For physical صَدَعَ, suitable equivalents are “split,” “cracked,” or “made a fissure.”

For اِنْصَدَعَ and تَصَدَّعَ, depending on the subject, “split open,” “cracked,” “came apart,” or “separated from one another” may be appropriate.

For the noun صَدْع, “fissure,” “crack,” and “splitting” are the principal equivalents.

For صُدَاع, “headache” is natural and precise.

The five Qur’anic uses suggest these renderings:

Al-Ḥijr 15:94 — فَاصْدَعْ بِمَا تُؤْمَرُ: “So proclaim openly what you are commanded.” Adding physical splitting or creating division to this translation is unnecessary.

Al-Rūm 30:43 — يَوْمَئِذٍ يَصَّدَّعُونَ: “On that day they will separate from one another.” This suits the verb’s human, collective meaning.

Al-Wāqiʿah 56:19 — لَا يُصَدَّعُونَ عَنْهَا: “They suffer no headache from it.” The established headache sense is natural here; there is no need to coin an equivalent describing split heads.

Al-Ḥashr 59:21 — خَاشِعًا مُتَصَدِّعًا: “Humbled and splitting apart.” If fluency requires it, “humbled and riven” is also suitable. Both preserve the illustration’s physical image.

Al-Ṭāriq 86:12 — وَالْأَرْضِ ذَاتِ الصَّدْعِ: “And by the earth possessing fissures.” This retains the word’s direct meaning and leaves the explanation concerning plant growth to the reflection.

In each case, the base translation should be brief and clear. Explaining the relationship between splitting and plain proclamation, separation, or headache belongs naturally in the root study and verse reflection.

10. Conclusion

Ṣ D ʿ in Arabic concerns splitting, breaking continuity, and producing an opening. This field includes stone cracking, earth opening, people separating, opening a path, speaking openly, and headache.

The root occurs five times in the Qur’an. Two uses, mutaṣaddiʿan in Al-Ḥashr 59:21 and al-ṣadʿ in Al-Ṭāriq 86:12, retain the clear image of splitting.

Al-Rūm 30:43 applies the family to people separating on the day of return. Fa-iṣdaʿ in Al-Ḥijr 15:94 means proclaiming the message openly and plainly. In Al-Wāqiʿah 56:19, yuṣaddaʿūna concerns suffering headache in a drinking context.

These uses show that physical splitting is essential to understanding the lexical family, but does not always provide the word’s direct equivalent in a sentence.

Ṣadʿ need not mean complete breakage or division in two; a fissure alone may appear. Taṣadduʿ can concern parts or people separating. Ṣudāʿ names headache, rather than reporting an actual split in the skull.

Ṣ D ʿ fundamentally means splitting and breaking continuity. Its uses extend to physical fissures, groups separating, speech being openly declared, and the sensation of headache. Each verse requires the meaning fitting its morphology, construction, and Qur’anic context; the shared root image should not replace all its actual senses.