Root TH KH N in the Qur’an

1. The semantic core and forms

Ibn Fāris states the central meaning in Maqāyīs al-Lughah:

«الثَّاءُ وَالْخَاءُ وَالنُّونُ يَدُلُّ عَلَى رَزَانَةِ الشَّيْءِ فِي ثِقَلٍ»

al-thāʾu wa-al-khāʾu wa-al-nūnu yadullu ʿalā razānati al-shayʾi fī thiqalin

The root denotes weightiness and steadiness involving heaviness.

Maqāyīs al-Lughah: heaviness and steadiness

He illustrates this through densely woven cloth and a forbearing, composed person.

Kitāb al-ʿAyn likewise records thakhīn for cloth with dense warp and weft and for someone forbearing and measured in conduct.

The root should therefore not be restricted from the outset to warfare, wounds, and killing. Its Arabic family has a broader semantic field, with heaviness and density present in several branches.

Thakhuna, thakhīn, and thakhānah

Thakhuna denotes becoming thick, viscous, or dense. Thakhīn describes something possessing that quality; thakhānah names the condition.

Thawbun thakhīnun, for example, is thick, densely woven cloth. Rajulun thakhīnun can describe gravity, composure, and forbearance rather than bodily thickness.

In Al-Mufradāt, Al-Rāghib al-Isfahānī emphasises thickness that prevents easy flow and movement.

One use thus concerns material density, another gravity of conduct. They belong to one lexical family, but construction and context determine the precise meaning.

Athkhana and ithkhān

Athkhana is Form IV. Attested uses include making heavy, incapacitating, or producing an intense effect.

In athkhanat-hu al-jirāḥatu, a wound weakens someone enough to diminish movement or resistance. Death is not a necessary part of this meaning: a person can remain alive while incapacitated by injury.

Athkhana fī al-ʿaduwwi enters the field of battle, describing severe blows, extensive killing, or widespread weakening of the enemy force.

Lisān al-ʿArab also transmits from Ibn al-Aʿrābī:

«أَثْخَنَ إِذَا غَلَبَ وَقَهَرَ»

athkhana idhā ghalaba wa-qahara

Athkhana can thus mean gaining dominance and overpowering.

Lisān al-ʿArab: dominance, wounds, and forms

Other uses concern intensity and thoroughness in an activity. Although killing is an important wartime instance of ithkhān, the verb is not directly synonymous with killing in every construction.

Muthkhan and istathkhana

Muthkhan describes someone made heavy and weak by blows or wounds. It can mean severely injured and unable to move without necessarily declaring the person dead.

Istathkhana is also recorded for being overcome by sleep, illness, or exhaustion. Something reduces the person’s capacity for ordinary movement and activity.

Heaviness therefore need not concern physical mass and weight; it can be a condition overwhelming the body or ability.

2. Early Arabic usage and a poetic witness

A verse attributed to the well-known poet Al-Aʿshā illustrates another use:

عَلَيْهِ سِلَاحُ امْرِئٍ مَاجِدٍ
تَمَهَّلَ فِي الْحَرْبِ حَتَّى اِثَّخَنَ

ʿalayhi silāḥu imriʾin mājidin / tamahhala fī al-ḥarbi ḥattā iththakhana

Translation:

“Upon him are the arms of a noble man who has taken his time over warfare until fully equipped and prepared.”

Iththakhana here concerns the warrior’s equipment and preparedness.

Ibn Barrī explains the form as Form VIII, denoting ample military equipment and preparation rather than killing enemies.

Ibn Barrī: Form VIII and military preparedness

Morphologically, poetic iththakhana differs from Qur’anic athkhana. In the former, the tāʾ of Form VIII assimilates into thāʾ; the Qur’anic verb is Form IV.

Sources differ in wording. Some lexical quotations give imriʾin ḥāzimin instead of imriʾin mājidin. The equipment and preparedness sense remains, but precise quotation should record the variation.

Al-Aʿshā’s Dīwān: mājid versus lexical ḥāzim

Al-Aʿshā belongs to pre-Islamic poetry, but attribution alone does not establish the date of a particular verse. It can illuminate early usage without claiming a certain date of composition.

Arabic evidence thus spans cloth thickness, human composure, the effects of injury and illness, extensive military equipment, and overpowering an enemy. These do not all equally define the Qur’anic occurrences, but help avoid restricting the verb to one instance.

3. First Qur’anic occurrence: yuthkhina

Al-Anfāl 8:67

مَا كَانَ لِنَبِيٍّ أَن يَكُونَ لَهُ أَسْرَىٰ حَتَّىٰ يُثْخِنَ فِي الْأَرْضِ ۚ تُرِيدُونَ عَرَضَ الدُّنْيَا وَاللَّهُ يُرِيدُ الْآخِرَةَ ۗ وَاللَّهُ عَزِيزٌ حَكِيمٌ

mā kāna li-nabiyyin an yakūna lahu asrā ḥattā yuthkhina fī al-arḍi turīdūna ʿaraḍa al-dunyā wa-Allāhu yurīdu al-ākhirata wa-Allāhu ʿazīzun ḥakīmun

Translation:

“It is not fitting for a prophet to have captives until he achieves decisive dominance in the land. You desire the passing goods of this world, while The God desires the Hereafter; The God is Mighty and Wise.”

The construction and meaning of yuthkhina

Yuthkhina is a third-person singular imperfect Form IV verb, in the subjunctive within ḥattā yuthkhina.

It has no expressed direct object here and is accompanied by fī al-arḍ. This differs from athkhantumūhum in Muḥammad 47:4, where hum explicitly supplies the object.

Early sources record two principal directions in explaining yuthkhina fī al-arḍ.

One is intense fighting and heavy blows against the enemy, potentially involving extensive killing. Wartime ithkhān has lexical support for this meaning.

The other is attaining dominance and firmness such that the opposing force can no longer resist as before.

Lisān al-ʿArab transmits from Abū Isḥāq both severe killing of enemies and the possibility of gaining power and establishment in the land.

Abū Isḥāq: two explanations of Al-Anfāl 8:67

The difference is therefore not simply between a lexical meaning and a new interpretation: both are recorded in the Arabic lexical tradition.

Captives and worldly gain

The verse begins with captives and immediately speaks of desiring ʿaraḍ al-dunyā.

The issue is thus more than the number killed in battle. The verse relates reaching ithkhān to taking captives and seeking worldly gain.

Contextually, one may ask whether it warns against prioritising financial benefit from captives over decisive dominance in battle.

The construction invites this question: condemnation of desiring worldly goods immediately follows ḥattā yuthkhina.

Ithkhān’s violent military dimension nevertheless cannot be removed. Dominance here concerns armed confrontation and may involve killing, wounding, and breaking the opposing force.

Conversely, yuthkhina alone does not yield an independent command to kill every enemy. Such a claim would require further evidence from the construction and other Qur’anic passages.

The verse more securely establishes priority for decisive dominance over profiting from captives, while the manner of achieving it requires the battle context and related passages.

Al-Ṭabarī: ithkhān, battle, and captives

4. Second Qur’anic occurrence: athkhantumūhum

Muḥammad 47:4

فَإِذَا لَقِيتُمُ الَّذِينَ كَفَرُوا فَضَرْبَ الرِّقَابِ حَتَّىٰ إِذَا أَثْخَنتُمُوهُمْ فَشُدُّوا الْوَثَاقَ فَإِمَّا مَنًّا بَعْدُ وَإِمَّا فِدَاءً حَتَّىٰ تَضَعَ الْحَرْبُ أَوْزَارَهَا ۚ ذَٰلِكَ وَلَوْ يَشَاءُ اللَّهُ لَانتَصَرَ مِنْهُمْ وَلَٰكِن لِّيَبْلُوَا بَعْضَكُم بِبَعْضٍ ۗ وَالَّذِينَ قُتِلُوا فِي سَبِيلِ اللَّهِ فَلَن يُضِلَّ أَعْمَالَهُمْ

fa-idhā laqītumu alladhīna kafarū fa-ḍarba al-riqābi ḥattā idhā athkhantumūhum fa-shuddū al-wathāqa fa-immā mannan baʿdu wa-immā fidāʾan ḥattā taḍaʿa al-ḥarbu awzārahā dhālika wa-law yashāʾu Allāhu la-intaṣara minhum wa-lākin li-yabluwa baʿḍakum bi-baʿḍin wa-alladhīna qutilū fī sabīli Allāhi fa-lan yuḍilla aʿmālahum

Translation:

“When you encounter those who have disbelieved, then striking the necks; until, when you have thoroughly incapacitated them, secure the bonds. Afterwards, either release as a favour or ransom, until the war lays down its burdens. Thus it is; had The God willed, He would Himself have exacted retribution from them, but this is to test some of you through others. Those killed in the way of The God—He will never render their deeds futile.”

The construction of athkhantumūhum

Athkhantumūhum is a second-person plural past Form IV verb. Its subject is the plural addressees; hum is its object suffix. Unlike Al-Anfāl 8:67, the opposing group is explicitly the verb’s object.

It can express inflicting severe blows, wearing down enemy strength, or bringing the opponents to a point where effective resistance is no longer possible.

The setting is plainly military. Fa-ḍarba al-riqāb concerns real violence in confrontation; ithkhān cannot be detached from this context and reduced to intellectual, psychological, or moral superiority.

Immediately after athkhantumūhum, however, another command follows:

«فَشُدُّوا الْوَثَاقَ»

fa-shuddū al-wathāqa

After reaching ithkhān, binding and securing the bonds becomes the subject.

This sequence is semantically important.

If athkhantumūhum meant killing every opposing person, subsequently binding captives would make no sense. Ithkhān here cannot therefore necessarily mean the death of every individual.

Some may have been killed or wounded during battle, while others were taken captive after resistance was broken. This accords with attested wartime ithkhān.

“You have thoroughly incapacitated them” can therefore fit: it preserves the battle’s severity while allowing for survivors and captives.

Al-Ṭabarī: dominance and surviving captives

From battle to captivity

Muḥammad 47:4 connects several stages.

Confrontation and striking in battle come first, then ithkhān, then securing bonds, followed by release as a favour or ransom.

Ithkhān marks the transition from severe confrontation to restraining captives.

The command to strike necks therefore cannot be transferred to captives no longer capable of fighting while disregarding the following wording. After ithkhān, the verse speaks of bonds and then release or ransom.

Nor does ithkhān itself mean taking captive. Captivity and bonds occur in the following phrase; athkhantumūhum describes the preceding stage.

Distinguishing the verb from the subsequent outcome is essential for accurate translation.

Relation to Al-Anfāl 8:67

Both verses connect ithkhān with captives.

Al-Anfāl 8:67 places ithkhān before having captives. Muḥammad 47:4 places binding captives, followed by release or ransom, after ithkhān.

At minimum, both indicate that taking and restraining captives do not replace achieving dominance during battle.

This does not make their historical circumstances or every detailed ruling identical. Their relationship within the broader discussion of war and captives is separate from defining this root.

5. Related roots

TH KH N (thakhan) and TH Q L (thiqal): heaviness and weight

Study of TH Q L

TH Q L likewise concerns heaviness, but differs in semantic range.

It can denote weight, burdens, heaviness, or resulting difficulty. Material TH KH N concerns thickness, density, and viscosity, extending in some human uses to intense effects and incapacitation.

An object can be heavy without much thickness; cloth can be thick without being very heavy.

Equating the roots would therefore erase real differences despite their overlap in heaviness.

The idea of a heavy blow helps explain wartime ithkhān without making every use a direct reference to physical weight.

TH KH N (thakhan) and GH L B (ghalab): dominance and breaking resistance

Study of GH L B (Not yet published)

GH L B denotes one side overpowering or gaining the upper hand over another.

Wartime ithkhān can lead to dominance or itself describe forceful dominance, without necessarily being identical to ghalaba.

Dominance can be gained without bloody battle; both Qur’anic ithkhān occurrences concern armed confrontation and breaking resistance.

“Decisive dominance” can therefore fit the result in some contexts without expressing every aspect of its intensity or manner.

TH KH N (thakhan) and Q T L (qatl): killing and incapacitation

Study of Q T L

Q T L directly concerns killing. Wartime ithkhān can involve extensive killing, but its attested meaning is not restricted to death occurring.

Muḥammad 47:4 itself also has qutilū, directly naming being killed; athkhantumūhum instead describes inflicting heavy blows and breaking the opposing force.

This does not deny a connection between ithkhān and killing; it shows the verbs are not completely equivalent.

Translation must therefore preserve both the violent confrontation and the possibility of survivors taken captive after defeat.

6. Proposed equivalents for Forqan

Material thakhuna can be rendered “became thick,” “became viscous,” or “became dense.” Depending on what it describes, thakhīn can mean “thick,” “dense,” “heavy,” or, of a person, “composed and measured.”

For athkhana involving wounds, illness, or blows, “severely incapacitate” can clarify the meaning. Military uses can favour “inflict heavy blows,” “break the capacity to resist,” or “achieve decisive dominance,” according to the construction.

Al-Anfāl 8:67 — yuthkhina

Brief root meaning: Thickness, density, and heaviness; in Form IV, producing a severe effect or thoroughly incapacitating.

Meaning in this verse: Achieving decisive and established dominance during battle.

Proposed translation of the phrase:

«حَتَّىٰ يُثْخِنَ فِي الْأَرْضِ»

ḥattā yuthkhina fī al-arḍi

“Until he achieves decisive dominance in the land.”

This chooses the dominance and establishment reading. Severe killing also has lexical support and should remain visible in the study.

Muḥammad 47:4 — athkhantumūhum

Brief root meaning: Thickness, density, and heaviness; in Form IV, producing a severe effect or thoroughly incapacitating.

Meaning in this verse: Breaking the opposing group’s capacity to resist through severe blows in battle.

Proposed translation of the phrase:

«حَتَّىٰ إِذَا أَثْخَنْتُمُوهُمْ»

ḥattā idhā athkhantumūhum

“Until, when you have thoroughly incapacitated them.”

This accords with the continuation: binding captives after ithkhān presupposes that those captured remain alive.

7. Conclusion

Thickness, density, heaviness, and firmness are important in TH KH N. Wounds, illness, and warfare show extensions to intense effects, incapacitation, and loss of resistance.

Both Qur’anic derivatives are Form IV and concern warfare. Yuthkhina in Al-Anfāl 8:67 concerns achieving dominance before having captives; athkhantumūhum in Muḥammad 47:4 describes breaking opponents’ resistance before securing captives’ bonds.

Ithkhān here cannot be detached from actual military violence, but is not an unconditional synonym for killing every opponent. Its more precise meaning follows from the connection between severe blows, dominance, and disabled resistance.

Preserving this distinction matters in Qur’anic translation: ithkhān describes a stage of battle and its severe result; the following commands determine the treatment of survivors, rather than meanings added to the root itself.