The Qur’anic Root TH Q B (Thaqaba)
Piercing, passing through something, and penetrating brightness
Qur’anic and lexical forms
ثَاقِب
(thāqib)
Active participle; the root’s only Qur’anic form, in two verses
ثَقَبَ يَثْقُبُ
(thaqaba yathqubu)
Form I verb in the lexicons; not Qur’anic
ثَقْب
(thaqb)
Perforation or an opening in the lexicons; not Qur’anic
ثُقْبَة
(thuqbah)
An individual hole or aperture; not Qur’anic
ثَقَّبَ
(thaqqaba)
Form II; the poetic witness concerning perforating a covering; not Qur’anic
مَثْقُوب
(mathqūb)
Passive participle; perforated; not Qur’anic
مِثْقَب
(mithqab)
A piercing instrument; not Qur’anic
أَثْقَبَ
(athqaba)
Kindling fire in lexical use; not Qur’anic
تَثَقَّبَ
(tathaqqaba)
A lexical form; not Qur’anic
ثَقِيب
(thaqīb)
A lexical form; not Qur’anic
مُثَقِّب
(muthaqqib)
Form II active participle; not Qur’anic
1. The root and its forms
The triliteral root TH Q B in Arabic concerns making a hole in something or penetrating it. Its clear material image is creating an opening in an object, such as leather, wood, or a pearl. The same semantic field includes uses concerning light, fire, stars, and even perceptive insight and penetrating thought.
The Qur’an uses this root only as thāqib: once describing a shihāb and once a najm. Both describe a luminous celestial phenomenon, but their contexts differ. These are two occurrences in two verses across two surahs.
The root’s semantic core is penetration and passage through an obstruction. Applied to light, it evokes brightness that pierces darkness and becomes visible within it. This use does not necessarily involve a hole made in a material body.
Three things must be distinguished: physically perforating an object, penetrating or shining light, and the features supplied by thāqib’s association with shihāb or najm in the verses.
2. Principal forms and semantic core
Lexical and Qur’anic forms
Thaqaba yathqubu is a form I verb meaning to pierce, make an opening, or penetrate something. Concerning stars and fire, it can also mean becoming bright or shining.
Thaqb is a noun or verbal noun concerning perforation, also used for the hole or opening itself.
Thuqbah denotes an individual hole or aperture.
Thāqib is the form I active participle: piercing or penetrating. Describing a star, fiery streak, or fire, it also means brilliant or possessing penetrating brightness. It is the root’s only Qur’anic derivative.
Thaqqaba, form II, means to perforate or make holes. Some uses involve numerous or repeated perforations, but form II does not guarantee that meaning in every case.
Mathqūb is the passive participle, perforated: for example, a pearl drilled to admit a thread.
Mithqab names a piercing instrument, such as a drill or awl.
Athqaba, form IV, means to light or kindle a fire in the relevant context.
Other forms, including tathaqqaba, thaqīb, and muthaqqib, are also recorded in Arabic but do not occur in the Qur’an.
Qur’anic morphology: the two thāqib occurrences
The material image: making an opening through an obstruction
Imagine a piece of leather before you. Piercing it with a pointed instrument passes through its surface and creates an opening that was not there before.
This involves more than striking. A blow may mark the surface, while thaqb concerns creating a hole and penetrating the material.
Drilling a pearl for a thread is another clear example. The pearl is not merely scratched: an opening is created through which the thread can pass.
This image helps explain thāqib describing light. A powerful light visible in darkness can be described as though it pierces that darkness and enters it. This is linguistic imagery for light’s effect, rather than a claim that darkness is a material body that is physically perforated.
In Maqāyīs al-Lughah, Ibn Fāris explains the root through أَنْ يَنْفُذَ الشَّيْءُ (an yanfudha al-shayʾu), something penetrating or passing through. He also places stellar brightness and kindling fire within this family.
3. Uses in early Arabic
Piercing a covering to make an opening for sight
A recognized pre-Qur’anic witness occurs in the poetry of al-Muthaqqib al-ʿAbdī, a pre-Islamic poet:
ظَهَرْنَ بِكِلَّةٍ وَسَدَلْنَ رَقْمًا
وَثَقَّبْنَ الْوَصَاوِصَ لِلْعُيُونِ
ẓaharna bi-killatin wa-sadalna raqman / wa-thaqqabna al-waṣāwiṣa li-al-ʿuyūni
“They appeared beneath a covering and lowered a patterned cloth, and opened eyeholes in the veils.”
The poet describes women with coverings over their faces, making openings at eye level so that they can see through them.
Al-waṣāwiṣ is the plural of waṣwaṣ and denotes eye-sized apertures in a covering or veil, rather than being a general name for the veil itself. Thaqqabna is form II from TH Q B and concerns making openings for the eyes.
The use is clearly material: a covering exists, and an opening is made in it for sight.
Some lexical transmissions give the first half as أَرَيْنَ مَحَاسِنًا وَكَنَنَّ أُخْرَى (arayna maḥāsinan wa-kananna ukhrā), whereas the examined edition of the collected poems places that wording in the following verse. The variation does not change the sense of thaqqabna al-waṣāwiṣa li-al-ʿuyūni, making eyeholes in the coverings.
Lisān al-ʿArab, W Ṣ Ṣ: the poetic witness and its variants
This witness matters because it demonstrates perforation independently of Qur’anic commentary. It also shows that thaqb need not mean breaking or damaging something: making a hole can serve a practical purpose such as enabling sight.
Simṭ al-Laʾālī: attribution to al-Muthaqqib and his pre-Islamic period
Fire and brightness
Arabic also uses this root for fire being kindled and shining.
Thaqabati al-nāru means that the fire became alight or burned brightly. Athqaba al-nāra means to light or kindle it.
Zand thāqib is a recorded expression for a fire-producing stick or implement that yields fire when struck or worked.
Classical lexicons also explain shihāb thāqib as a bright fiery streak or flame. The same combination occurs in the Qur’an.
Penetrating light provides an explanation of the relationship between perforation and brightness. When a flame is lit in surrounding darkness, its light appears in a previously dark space. Thāqib highlights the light’s brilliance and penetrating effect.
This does not establish that Arabic speakers consciously pictured darkness being perforated whenever they used the word. Applied to stars and fire, thāqib had become an established description of brightness. Penetration helps explain the semantic relationship; it does not replace the word’s conventional meaning.
Penetration in nonmaterial matters
Classical Arabic also records expressions such as raʾy thāqib and ʿilm thāqib.
Raʾy thāqib denotes judgment or an opinion that looks beyond appearances and reaches into a matter. “Penetrating insight” or “deep discernment” conveys a similar image in English.
ʿIlm thāqib concerns clear, penetrating knowledge: understanding that dispels obscurity and makes the subject clear.
Ḥasab thāqib concerns the prominence, reputation, or distinction of a person’s or family’s standing.
These uses show penetration extending into cognition and social distinction. Their presence in classical sources does not establish that every expression was already current in this form before the Qur’an. Nor does the semantic image alone establish the historical order in which these meanings developed.
Conversely, raʾy thāqib must not be imposed on al-najm al-thāqib. The adjective there describes a star, rather than human knowledge or cognition.
Lisān al-ʿArab and Asās al-Balāghah: material and nonmaterial uses
Rising and reaching a height
Early explanations of thāqib also transmit a use involving rising or reaching a height.
In Maʿānī al-Qurʾān, al-Farrāʾ gives muḍīʾ, bright, and also reports thaqaba for a bird that has risen very high.
This can be related to upward penetration, as though the bird advances into the overhead space beyond an ordinary height.
On this basis, some explanations of al-najm al-thāqib propose a star in a high position. That explanation does not displace brightness or establish that the Qur’anic adjective concerns height alone.
4. Qur’anic uses
A. Shihāb thāqib: a piercing fiery streak
The root’s first occurrence in the Qur’an’s arrangement is in Al-Ṣāffāt:
إِلَّا مَنْ خَطِفَ الْخَطْفَةَ فَأَتْبَعَهُ شِهَابٌ ثَاقِبٌ
illā man khaṭifa al-khaṭfata fa-atbaʿahu shihābun thāqibun
“Except one who snatches something away; then a piercing fiery streak follows him.”
Al-Ṣāffāt 37:10
The preceding verses supply the context. Al-Ṣāffāt 37:6 concerns adorning the nearest heaven with the celestial lights. Al-Ṣāffāt 37:7 concerns protection from every rebellious devil. Al-Ṣāffāt 37:8 and Al-Ṣāffāt 37:9 describe their inability to listen to the exalted assembly, being driven away from every side, and an enduring punishment.
Verse ten continues that subject: someone snatches something away and a shihāb follows him.
In shihāb thāqib, shihāb itself denotes a bright, fiery phenomenon. Thāqib describes it, highlighting penetrating brightness.
Two points must remain distinct.
First, the shihāb is the pursuer in the sentence. Fa-atbaʿahu expresses that relationship.
Second, thāqib is its adjective, concerning penetrating, piercing brightness.
Pursuit must therefore not be assigned to TH Q B itself: it comes from atbaʿa. Likewise, the fiery character and nature of the shihāb come from shihāb and its context, rather than thāqib alone.
Does thāqib mean physical perforation here?
The root’s material sense allows the image of piercing and penetration, but the verse does not explicitly say that the shihāb perforates the pursued being’s body.
The verb of pursuit occurs, but the manner of impact, kind of harm, and mechanism of the shihāb’s effect are not described in detail.
“A perforating fiery streak” may therefore direct the reader immediately toward making a hole in a body, which the verse does not itself specify.
“A piercing fiery streak” or “a bright, penetrating shihāb” better preserves the semantic range without adding a particular physical mechanism.
The parallel verse in Al-Ḥijr
Al-Ḥijr also says:
إِلَّا مَنِ اسْتَرَقَ السَّمْعَ فَأَتْبَعَهُ شِهَابٌ مُبِينٌ
illā mani istaraqa al-samʿa fa-atbaʿahu shihābun mubīnun
“Except one who steals a hearing; then a manifest fiery streak follows him.”
Al-Ḥijr 15:18
The construction is close to Al-Ṣāffāt 37:10. In both, a shihāb follows someone seeking covert access to something.
The shihāb’s adjective nevertheless differs.
Al-Ṣāffāt uses thāqib; Al-Ḥijr uses mubīn.
Mubīn belongs to B Y N and concerns being clear or making clear. Thāqib belongs to TH Q B and has penetration and penetrating brightness in its lexical background.
The adjectives thus approach one another in the field of brightness and visibility, without being exact lexical synonyms.
Nor does considering the two verses together establish that every shihāb in every Arabic use necessarily performs this pursuit and repulsion. That role comes from the contexts concerning the heaven’s protection.
B. Al-najm al-thāqib: the piercing star
The root’s second and final Qur’anic occurrence is in Al-Ṭāriq.
وَالسَّمَاءِ وَالطَّارِقِ
wa-al-samāʾi wa-al-ṭāriqi
“By the heaven and the night-arriving one.”
Al-Ṭāriq 86:1
وَمَا أَدْرَاكَ مَا الطَّارِقُ
wa-mā adrāka mā al-ṭāriqu
“What has made you know what the night-arriving one is?”
Al-Ṭāriq 86:2
النَّجْمُ الثَّاقِبُ
al-najmu al-thāqibu
“The piercing star.”
Al-Ṭāriq 86:3
The three verses first introduce al-ṭāriq, then ask about it, and finally identify it as al-najm al-thāqib.
Three important words from three independent roots occur together in this construction.
Al-ṭāriq belongs to Ṭ R Q and here concerns something arriving or appearing at night.
Al-najm belongs to N J M and means star.
Al-thāqib belongs to TH Q B and qualifies the star, describing its brightness as piercing and penetrating.
Ṭāriq and thāqib therefore differ. Ṭāriq concerns the time and manner of appearing; thāqib concerns the quality of brightness and its penetrating effect.
Forqan’s published study of the Qur’anic root Ṭ R Q also discusses this distinction.
Is thāqib the name of a particular star?
Some early explanations identify al-najm al-thāqib with Saturn. Descriptions of a star higher than the other stars also occur.
The verse itself, however, says only al-najm al-thāqib and names no particular celestial object.
Grammatically, al-thāqib qualifies al-najm. A definite adjective does not make the phrase necessarily a proper name for a star.
A definitive identification with Saturn, the Pleiades, Polaris, or any other object therefore goes beyond the wording without independent evidence.
Does the star physically perforate darkness?
Taking thāqib in the material sense of a perforator may suggest that the star passes through a body or pierces a physical covering.
That understanding is unnecessary in the use concerning brightness.
Language can describe light as piercing or penetrating without referring to a hole made in a real body. The image here agrees with the established use of thāqib for brightness.
“The star’s light pierces darkness” nevertheless explains the linguistic image. The verse does not use ẓulmah, darkness, or name an object that the star perforates.
That distinction matters in translation. The lexical explanation can discuss piercing darkness, but the translation should not present darkness as an explicit object supplied by the Arabic.
The continuation of the surah
After the piercing star is introduced, the text says:
إِنْ كُلُّ نَفْسٍ لَمَّا عَلَيْهَا حَافِظٌ
in kullu nafsin lammā ʿalayhā ḥāfiẓun
“There is no soul without a guardian over it.”
Al-Ṭāriq 86:4
The continuation calls human beings to consider their creation, then raises their return and the exposure of inward secrets on the day of judgment.
This continuity makes the opening oath an introduction to human beings, guardianship, and responsibility.
It does not make TH Q B itself mean watching over, knowing secrets, or examining human actions. Those subjects come from the following verses.
An imagery-based connection between penetrating brightness and hidden matters becoming manifest may offer a reflection, but establishing it as the verse’s definite intent requires further evidence.
5. The relationship between the two Qur’anic uses
In Al-Ṣāffāt 37:10, thāqib qualifies shihāb; in Al-Ṭāriq 86:3, it qualifies najm.
Both are celestial and concern brightness, but their presentation and contextual roles differ.
Al-Ṣāffāt places the shihāb within the pursuit of someone who has snatched something. Al-Ṭāriq places the star within the explanation of an oath.
The first verse includes an act of pursuit; the second has no such verb. Importing the shihāb’s role must therefore not turn thāqib in Al-Ṭāriq into pursuing or attacking.
Shihāb and najm are also different nouns. Shihāb can denote a flame or bright, fiery phenomenon; najm in celestial use denotes a star.
The shared adjective does not establish that the Qur’an identifies their physical natures.
Modern astronomy also distinguishes stars from meteors. Understanding these verses nevertheless begins with the features the Qur’an itself states. Establishing a precise scientific referent is a separate question from thāqib’s lexical meaning.
NASA: the astronomical definition of a meteor, separate from identifying the verse’s referent
Their shared feature is penetrating brightness. Pursuit, nighttime appearance, and the kind of celestial phenomenon come from the other words and contexts.
7. Morphology and construction
Thāqib follows the fāʿil pattern and is the active participle of form I thaqaba.
Its two Qur’anic uses must retain their distinct definiteness and syntactic positions.
Al-Ṣāffāt 37:10 has the indefinite shihābun thāqibun. Shihāb is the subject of atbaʿahu and thāqib its qualifier, both nominative.
Al-Ṭāriq 86:3 has the definite al-najm al-thāqib, with al-thāqib qualifying al-najm. The phrase explains al-ṭāriq in response to the preceding question.
The definite al-thāqib in Al-Ṭāriq does not create a new root meaning. The indefinite thāqib in Al-Ṣāffāt does not by itself determine intensity or the number of fiery streaks.
An active participle need not denote a person acting with intention or awareness. Applied to a star or shihāb, thāqib describes the phenomenon’s quality. The fāʿil pattern therefore does not establish that the star independently intends to pierce darkness.
In both verses, what the star or shihāb does and how it is qualified must be examined separately.
8. Translation proposals for Forqan
For material uses of thaqaba, “pierced” or “made an opening” are natural. Where passage through an obstruction is prominent, “penetrated” or “passed through” may fit.
For thaqb, “hole” or “opening”; for mathqūb, “perforated”; and for mithqab, “piercing tool,” “drill,” or “awl” are appropriate.
For thāqib concerning light, “piercing,” “penetrating,” and “brilliant” are significant options. “Brilliant” clearly conveys the established luminous use but weakens the image of penetration. “Piercing” preserves that image but can suggest physical penetration.
The sentence therefore determines the choice.
For shihāb thāqib in Al-Ṣāffāt 37:10, “a piercing fiery streak” is concise. “A brilliant, penetrating shihāb” offers a fuller explanation but is longer as a direct translation.
For Al-Ṭāriq 86:3, “the piercing star” agrees with the earlier Forqan study’s distinction between ṭāriq and thāqib. “The brilliantly shining, penetrating star” makes the luminous sense more explicit.
In both cases, the translation is best kept concise, with the relationship between material perforation and penetrating brightness explained in the reflection.
Rendering thāqib as “neutron star,” “pulsar,” “Polaris,” or the name of another specific celestial object is not a lexical translation. It identifies a referent that the verse itself does not specify.
9. Conclusion
TH Q B in Arabic concerns piercing or penetrating something. Its material image is an opening made in a body, such as leather, a pearl, or a covering.
The field also includes established uses concerning light and fire. A star, fiery streak, or flame described as thāqib has conspicuous, penetrating brightness. Penetration here need not mean perforating a material body.
The Qur’an uses only thāqib from this root, twice: qualifying shihāb in Al-Ṣāffāt 37:10 and najm in Al-Ṭāriq 86:3. Both concern celestial brightness. The shihāb’s pursuit and the ṭāriq’s nighttime appearance come from other words and the contexts.
Thāqib does not by itself mean pursuer, night-arriving one, guardian, or the name of a particular star. In Qur’anic use, it describes the penetrating, conspicuous quality of brightness.
TH Q B thus centers on penetration and perforation, while thāqib in its two Qur’anic uses conveys brilliant, penetrating brightness associated with the image of piercing. “Piercing” or “penetrating” can preserve this in translation, with the fuller image explained in the lexical commentary.