91:4
وَٱلَّيْلِ إِذَا يَغْشَىٰهَا
wa-al-layli idhā yaghshāhā
And [by] the night when it covers [i.e., conceals] it
— Saheeh International
and by the night as it conceals it,
— M. A. S. Abdel Haleem
By the night as it conceals it (the sun).
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali