The Qur’anic Root Q F W

1. The semantic core: moving along another’s track

Lexical sources define qafw as follows:

قَفَوْتُ أَثَرَهُ: تَبِعْتُهُ

Qafawtu atharahu: tabiʿtuhu.

“I followed his track: I followed him.”

That is, I followed his track.

Lisān al-ʿArab also says:

القَفْوُ ... أَنْ يَتْبَعَ الشَّيْءَ

Al-qafwu … an yatbaʿa al-shayʾa.

“Qafw … is to follow something.”

Qafw means following something. The source then records اقتفى أثره (iqtafā atharahu) and تقفاه (taqaffāhu) with the same meaning.

The image is very clear: someone has gone ahead and left a track; another follows behind along the same route.

In this respect, qafā, the back of the neck or a person’s rear, also fits the imagery of this field. Someone moving after another sees that person’s back. Without historical evidence, however, we cannot determine whether the verb qafā was derived from the noun qafā, or both branches emerged from an older semantic field.

Early Arabic witnesses

Exegetical and lexical sources cite a verse by al-Nābighah al-Jaʿdī for the branch taqāfī:

وَمِثْلُ الدُّمَى شُمُّ العَرانِينِ ساكِنٌ
بِهِنَّ الحَياءُ لا يُشِعْنَ التَّقافِيا

Wa-mithlu al-dumā shummu al-ʿarānīni sākinun; bihinna al-ḥayāʾu lā yushiʿna al-taqāfiyā.

التقافي (al-taqāfī) here is explained as hurling accusations and attributing offensive statements to one another. Al-Nābighah al-Jaʿdī belongs to the poets who lived across the pre-Islamic and Islamic periods, and this verse’s precise date is unknown. It is therefore a useful witness to early Arabic usage, but should not be called definitively pre-Qur’anic without separate evidence.

Another well-known verse, by al-Kumayt:

فَلَا أَرْمِي الْبَرِيءَ بِغَيْرِ ذَنْبٍ
وَلَا أَقْفُو الْحَوَاصِنَ إِنْ قَفَيْنَا

Fa-lā armī al-barīʾa bi-ghayri dhanbin; wa-lā aqfū al-ḥawāṣina in qafaynā.

also uses أقفو (aqfū) for pursuing someone with an offensive attribution or accusation. Al-Kumayt, however, is an Umayyad-period poet, so this verse is not direct evidence for reconstructing the language before the Qur’an.

Lexical sources are very clear about the primary meaning of following a track. Among the witnesses available for examination here, however, no poetic verse with a secure attribution and definitively pre-Qur’anic date was found that uses precisely قفا أثره (qafā atharahu) for tracing a route. There is therefore no need to manufacture an uncertain witness.

2. “وَلَا تَقْفُ مَا لَيْسَ لَكَ بِهِ عِلْمٌ (wa-lā taqfu mā laysa laka bihi ʿilmun)”

The Qur’an’s only occurrence of the simple verb is:

وَلَا تَقْفُ مَا لَيْسَ لَكَ بِهِ عِلْمٌ
إِنَّ السَّمْعَ وَالْبَصَرَ وَالْفُؤَادَ كُلُّ أُولَٰئِكَ كَانَ عَنْهُ مَسْئُولًا

Wa-lā taqfu mā laysa laka bihi ʿilmun. Inna al-samʿa wa-l-baṣara wa-l-fuʾāda kullu ulāʾika kāna ʿanhu masʾūlan.

“And do not follow that of which you have no knowledge; indeed, hearing, sight, and the heart—all of these will be questioned.”

Al-Isrāʾ 17:36

The basic meaning of تَقْفُ (taqfu) is “follow, pursue.” Al-Akhfash and many lexicographers likewise explain the verse through لا تتبع ما لا تعلم (lā tattabiʿ mā lā taʿlamu): do not follow what you do not know.

Several more specific explanations of the verse have nevertheless been transmitted from early periods:

“Do not say ‘I saw’ when you did not see, ‘I heard’ when you did not hear, or ‘I knew’ when you do not know.”

Some applied it to false testimony, others to making wrongful accusations against people. Al-Ṭabarī even takes the use of qafw for slander and offensive attribution into account in his preferred interpretation.

These explanations must remain distinct from the root’s meaning.

Qafw does not in itself mean “lying” or “making accusations.” These are instances of pursuing something without knowledge. The continuation of the verse is itself broad: hearing, sight, and the heart are all included in the question of responsibility.

The rendering “do not follow that of which you have no knowledge” therefore preserves the verb’s core, allowing speech, testimony, judgment, claims, and following without knowledge to be examined as applications in explaining the verse.

From following to attributing speech

The question remains how a verb meaning “to follow” can develop the sense of attributing something offensive to someone.

Lexicographers record the expression:

قَفَا فُلَانًا (qafā fulānan)

for pursuing another person with offensive words or accusations. Ibn Fāris explains this branch as though one sends an offensive statement after the person. Lisān al-ʿArab likewise records qafw both for following a track and for casting an offensive attribution upon someone.

This connection is linguistically intelligible, but the accusatory branch should not become the root’s primary definition. Ibn Fāris’s definition is clear: the family’s basic principle is coming after and following.

3. “قَفَّيْنَا (qaffaynā)”: bringing someone after another

The root’s other four occurrences all take the form قَفَّيْنَا (qaffaynā).

Al-Baqarah 2:87 says:

وَلَقَدْ آتَيْنَا مُوسَى الْكِتَابَ وَقَفَّيْنَا مِنْ بَعْدِهِ بِالرُّسُلِ

Wa-laqad ātaynā Mūsā al-kitāba wa-qaffaynā min baʿdihi bi-l-rusuli.

“And We gave Moses the Book, and after him brought Messengers, one after another.”

Here, مِنْ بَعْدِهِ (min baʿdihi) itself makes the meaning of succession clear.

Al-Māʾidah 5:46 preserves the root’s image even more explicitly:

وَقَفَّيْنَا عَلَىٰ آثَارِهِمْ بِعِيسَى ابْنِ مَرْيَمَ

Wa-qaffaynā ʿalā āthārihim bi-ʿĪsā ibni Maryama.

“And along their tracks We brought Jesus, son of Mary, after them…”

The expression عَلَىٰ آثَارِهِمْ (ʿalā āthārihim) is especially important. A “track” is what the earlier person leaves behind and the later person follows. In this verse, the Qur’an almost unfolds the root’s lexical image within the sentence itself.

Al-Ḥadīd 57:27 also uses this verb twice:

ثُمَّ قَفَّيْنَا عَلَىٰ آثَارِهِمْ بِرُسُلِنَا وَقَفَّيْنَا بِعِيسَى ابْنِ مَرْيَمَ

Thumma qaffaynā ʿalā āthārihim bi-rusulinā wa-qaffaynā bi-ʿĪsā ibni Maryama.

“Then along their tracks We brought Our Messengers after them, and brought Jesus, son of Mary, after them.”

These four occurrences have a wholly consistent field: a Messenger comes after the earlier Messenger or Messengers within the same succession.

4. Does “قَفَّيْنَا (qaffaynā)” mean “We sent”?

Many translations render qaffaynā as “We sent.” That may be the sentence’s practical result, since it concerns sending prophets, but Q F W itself does not mean “sending.”

If qaffaynā meant only “We sent,” the elements:

مِنْ بَعْدِهِ

Min baʿdihi.

“After him.”

and:

عَلَىٰ آثَارِهِمْ

ʿAlā āthārihim.

“Along their tracks.”

would lose their important role in the imagery.

The verb says We brought or placed someone after another. The sending of a prophet is understood from the context of messengership.

Thus renderings such as:

“After him We brought Messengers in succession”

or:

“We brought Jesus, son of Mary, after them”

are closer to the root than the simple rendering “We sent Messengers.”

Does Form II express causation here?

The simple verb qafā is itself transitive:

قفا أثره (qafā atharahu) = he followed his track.

The doubled consonant alone therefore does not establish that Form II necessarily means “making someone follow.” Early grammarians also noted this point, explaining that in the construction:

قَفَّيْنَا عَلَىٰ آثَارِهِمْ بِعِيسَى

Qaffaynā ʿalā āthārihim bi-ʿĪsā.

“We brought Jesus after them, along their tracks.”

عيسى (ʿĪsā) occurs with bāʾ, the preposition bi-. The sentence means that he was brought after his predecessors, not that he was forced to pursue someone.

The morphological distinction must therefore be understood through the Qur’an’s actual usage: in these four occurrences, qaffaynā expresses succession and bringing one after another.

5. The succession of prophets: what comes from the root, and what does not?

Qaffaynā shows that a prophet came after the earlier prophet or prophets. In Al-Māʾidah and Al-Ḥadīd, على آثارهم (ʿalā āthārihim) makes this succession explicit.

Several further conclusions, however, do not come from the root itself.

Q F W alone does not say that the later Messenger repeated every detail of the earlier Messenger’s work exactly.

It does not say that there were no differences between their books, laws, or missions.

Nor does “following” here mean Jesus’s human imitation of earlier prophets. The sentence’s agent is The God: He placed Jesus after them.

Al-Māʾidah 5:46 immediately describes Jesus as:

مُصَدِّقًا لِمَا بَيْنَ يَدَيْهِ مِنَ التَّوْرَاةِ

Muṣaddiqan li-mā bayna yadayhi mina al-tawrāti.

“Confirming what was before him of the Torah.”

His relationship with the Torah is explained through مصدقا (muṣaddiqan), “confirming,” rather than through Q F W itself.

The root’s contribution in these verses is thus specific: order and continuity; one coming after another.

6. Q F W compared with T B ʿ: coming after and following

The root ت ب ع (T B ʿ) is the closest general family to Q F W.

Ibn Fāris himself says in defining T B ʿ:

وَهُوَ التُّلُوُّ وَالْقَفْوُ

Wa-huwa al-tuluwwu wa-l-qafwu.

“It is coming after and following.”

That is, its basic principle is coming after and qafw. He also explains تبعت فلانا (tabiʿtu fulānan) as coming after someone and أتبعته (atbaʿtuhu) as catching up with him.

These roots therefore overlap in a real way, and no artificial boundary should be drawn merely to make them appear different.

Nevertheless, an observable tendency exists in Qur’anic usage.

Q F W occurs only five times, four directly concerning succession: someone after someone else. It is even accompanied by على آثارهم (ʿalā āthārihim), “along their tracks.”

T B ʿ is a much broader family. Besides moving behind a person, it can express following a path, guidance, desire, a command, or a person. Ittibāʿ thus readily enters the field of accepting a way and following it in practice in the Qur’an.

A cautious distinction is therefore:

Q F W preserves the image of “coming after and following a track” more prominently in its Qur’anic usage;
T B ʿ is the more general term for following and pursuing, and can be used without a tangible spatial or temporal succession.

This is a tendency, not an absolute boundary in the language.

7. Q F W compared with Q Ṣ Ṣ: following a track

The root ق ص ص (Q Ṣ Ṣ) is also fundamentally associated with following a track. Ibn Fāris identifies its basic principle as tracing something:

اقْتَصَصْتُ الأَثَرَ إِذَا تَتَبَّعْتُهُ

Iqtaṣaṣtu al-athara idhā tatabbaʿtuhu.

“I traced the track: when I followed it.”

The Qur’an also uses this image directly:

فَارْتَدَّا عَلَىٰ آثَارِهِمَا قَصَصًا

Fa-rtaddā ʿalā āthārihimā qaṣaṣan.

“So the two went back along their tracks, retracing them.”

Al-Kahf 18:64

And concerning Moses’s sister:

وَقَالَتْ لِأُخْتِهِ قُصِّيهِ

Wa-qālat li-ukhtihi quṣṣīhi.

“And she said to his sister: Follow him.”

Al-Qaṣaṣ 28:11

That is, follow his track.

Q Ṣ Ṣ and Q F W are therefore very close in “following a track.”

Their later branches, however, diverge. In the Qur’an, Q Ṣ Ṣ also extends to following reports and recounting them in an ordered way, giving rise to qaṣaṣ for narration. Q F W has no such Qur’anic branch; its five occurrences remain in the simple field of following and bringing after.

For the Qur’an itself, we can therefore say:

Q Ṣ Ṣ has developed the capacity for carefully tracing a track or report;
Q F W retains more prominently the relationship of coming behind and following.

In their basic meaning, however, the two families clearly overlap.

8. Qafā and qāfiyah: non-Qur’anic forms of the same family

قَفَا (qafā) itself, meaning the back of the neck, does not occur in the Qur’an.

Lexical sources define it as the rear part of the neck and regard its alif as deriving from wāw. Structurally, it therefore belongs to the same Q F W family.

قافية (qāfiyah) likewise does not occur in the Qur’an. Lexicographers offer several related explanations for the name of the rhyme: it is the end of a poetic line; it comes after the utterance; or the rhymes of successive lines follow one pattern. Ibn Fāris explicitly relates it to the same principle, اتباع شيء لشيء (ittibāʿu shayʾin li-shayʾin), “one thing following another.”

These non-Qur’anic forms help explain the root’s network, but their familiarity does not justify including them among Qur’anic derivatives.

9. Translation guide

تَقْفُ (taqfu) in Al-Isrāʾ 17:36 is best understood along the lines of:

“Do not follow”
“Do not pursue”

These renderings retain the verb’s sense.

Translating it directly as “do not say” or “do not accuse” replaces the verb’s meaning with only one interpretive application of the verse.

Thus:

وَلَا تَقْفُ مَا لَيْسَ لَكَ بِهِ عِلْمٌ

Wa-lā taqfu mā laysa laka bihi ʿilmun.

can be translated as:

“And do not pursue that of which you have no knowledge.”

An explanation of the verse can then clarify that claiming to have heard or seen something one has not heard or seen, testimony without knowledge, wrongful attribution, and every kind of following without knowledge fall within this prohibition.

قَفَّيْنَا (qaffaynā) likewise is best not translated merely as “We sent.”

In:

وَقَفَّيْنَا مِنْ بَعْدِهِ بِالرُّسُلِ

Wa-qaffaynā min baʿdihi bi-l-rusuli.

“And after him We brought Messengers in succession”

better preserves the meaning of succession.

And in:

وَقَفَّيْنَا عَلَىٰ آثَارِهِمْ بِعِيسَى ابْنِ مَرْيَمَ

Wa-qaffaynā ʿalā āthārihim bi-ʿĪsā ibni Maryama.

one can say:

“And along their tracks We brought Jesus, son of Mary, after them.”

This rendering preserves both qafw and āthār, “tracks,” within the sentence’s construction.

Conclusion

The root ق ف و (Q F W) forms a very small but coherent Qur’anic family. It occurs only five times: once as تقف (taqfu) and four times as قفينا (qaffaynā).

Its linguistic core is following and coming after something. Lexical sources give the clear example قفوت أثره (qafawtu atharahu) for following someone’s track, while Ibn Fāris identifies the root’s basic principle as “one thing following another.”

Lexicographers have long noted the relationship of this meaning to qafā, the back of the neck: someone going after another follows their back. This image makes the relationship between the branches intelligible, but the precise path of derivation should not be treated as certain without historical evidence.

In Al-Isrāʾ 17:36, the basic meaning of:

وَلَا تَقْفُ مَا لَيْسَ لَكَ بِهِ عِلْمٌ

Wa-lā taqfu mā laysa laka bihi ʿilmun.

is not to follow something of which you have no knowledge. Early explanations concerning false testimony, claims of seeing and hearing, accusations, and wrongful attribution are important applications of this principle, but the verb itself is not confined to “lying” or “accusing.”

The four occurrences of qaffaynā preserve the same core in the succession of prophets. Messengers come after Moses, and Jesus is placed على آثارهم (ʿalā āthārihim), along the tracks of the earlier prophets. The root’s contribution is continuity and one coming after another; the substantive relationship between the prophets is explained through other words in those verses.

Comparison with T B ʿ and Q Ṣ Ṣ also shows that all three families can concern following. T B ʿ has a broader Qur’anic field of following; Q Ṣ Ṣ extends to tracing tracks and then following and recounting reports; Q F W, in its limited Qur’anic usage, very clearly retains the image of coming behind and following.

A cautious account of the root is:

Q F W: a family centered on coming after something and following it from behind. From this core come taqfu for pursuing something and qaffaynā for bringing someone after another. In the Qur’an, this root either prohibits following without knowledge or expresses the continuity and succession of prophets.