وَمِن شَرِّ غَاسِقٍ إِذَا وَقَبَ
1. Dense darkness, the pressing down of the night's darkness. Ghasaqa'l-layl — the night grew dark, the darkness settled. In the Qurʾān: "Perform the prayer from the declining of the sun to the west until the darkness of the night (ghasaqi'l-layl)" (al-Isrāʾ 17/78). Here ghasaq denotes the stretch of time running towards the darkest point of the day.
2. A thick, heavy, flowing thing. From the same root, ghassāq occurs in the Qurʾān as the drink of the people of Hell (Ṣād 38/57; al-Nabaʾ 78/25) and is explained in the commentaries with senses such as pus, or an intensely cold and foul-smelling liquid.
The place where the two senses meet is important: a density that flows, that seeps, that spreads. In the conception carried by this Arabic root, darkness is not something that "is" but something that flows. Not the cutting off of light but the pouring out of darkness. Like a liquid it fills the hollows, the empty spaces, the gaps.
Ghāsiq is an active participle: "that which darkens, whose darkness settles". No single English word carries it; renderings such as "the darkening one" or "when the darkness falls" are used.
Waqb — a pit, a hollow, a recess. A hollow in a rock, the mouth of a well. And in Arabic the socket of the eye is called waqb al-ʿayn. The word, then, first names an emptiness.
The verbal form waqaba, for its part: to enter that emptiness, to sink into it, to seep in, to fill it. Waqabati'sh-shams — the sun set, that is, it withdrew into, entered, its place below the horizon.
The verb occurs in the Qurʾān only in this verse. (I am not 100% certain of this finding; it does not rest on a search but on my memory — it should not be taken as a definite claim.)
What does the choice of the word do? It could have said "when the night comes" (idhā jāʾa), it could have said "when the darkness presses down" (idhā ghashiya). Instead, the verb of seeping into a hollow has been chosen.
This describes how the darkness comes: it does not enter by the door, it seeps in through the gaps. Not all at once, but little by little. By the time you notice it, it is already inside. The moment at which the darkness comes cannot be fixed; one cannot say at a particular minute "there, now it has become dark". Seeping is exactly such a movement.
And one step further: what seeps in seeps into an emptiness. Waqb is a hollow. Darkness fills not a full place but an empty one.
I do not present this as a deliberate implication of the verse — it is an association I have made myself. But because the concrete sense of the word stands here, I record it.
Because the word comes indefinite, its scope is wide, and more than one rendering has been given in the classical commentaries:
| View | Ground | Note |
|---|---|---|
| The night, when its darkness settles | The original sense of the root; the use of ghasaqi'l-layl in al-Isrāʾ 17/78 | The most widespread view, and the strongest in point of language |
| The moon, when it darkens (when it is eclipsed) | In a report transmitted from ʿĀʾisha in the ḥadīth sources it is related that the Prophet pointed to the moon and said "this is the ghāsiq when it settles" | The report is transmitted; there are differences of assessment about its chain and its interpretation |
| The star al-Thurayyā, when it sets | Transmitted from some early exegetes; in that period there was an opinion that illnesses increased with the setting of this star | A transmitted view; its support in the language is weak |
| The snake, when it bites | Ghāsiq is read as the snake, waqaba as its biting | It has found few adherents |
| Everything the darkness covers; every hidden threat | The general sense of the root | A comprehensive reading |
On the view "when the moon is eclipsed". This view is related often and is sometimes presented as though it were certain. The honest position is this: such a report has been transmitted, it is found in the sources, but by itself it does not determine the lexical meaning of the word. Moreover there is no tension between what is said in the report and the wording of the sūra: the moon too is a part of the night, and when it darkens it leaves the night wholly dark. The report, that is, can also be read as showing an instance of the sense "night" — and some of the exegetes have read it so.
That the eclipse or the darkening of the moon was counted an ill omen in that period is a known thing. The general attitude of the Qurʾān and the sunna is to reject the loading of ill omen onto events in the sky. To read the report as meaning "the moon is an ill omen" therefore strains both the wording of the report and this general attitude.
I state a preference, and I record that it is not binding: the word's coming indefinite shows that it should not be nailed to a single object. "The darkness of night" is the original sense; renderings such as the moon, the star, the snake are instances of that original sense, not alternatives to it.
The verse does not say "from the evil of the darkness"; it says "from the evil of the darkness when it settles". This restriction occurs twice in the sūra (here and in verse 5), and it is important.
Darkness is not in itself evil. The Qurʾān names the night as a favour: "He made the night a rest" (al-Anʿām 6/96 — in the same verse, immediately after the expression "the one who splits the dawn"); "We made your sleep a rest, and We made the night a covering" (al-Nabaʾ 78/9-10; the same pair occurs in al-Furqān 25/47 as well).
The night, that is, is an ordered and good part of creation. The evil lies not in the night itself but in a particular state of the night and in the possibilities that state brings.
This has a concrete counterpart. Darkness is a covering that makes harm possible: it gives the possibility of hiding, it cuts off sight, it makes defence harder, it enlarges fear. Throughout history the night has been the time of theft, of raids, of attack, of getting lost. It is also the time when illnesses grow worse, when pain increases, when loneliness is felt most — this is a universal part of human experience, and the verse rests on that experience.
I draw no scientific claim from this. I state only that the image the verse builds rests on real human experience.