وَءَايَةٌ لَّهُمُ ٱلَّيْلُ نَسْلَخُ مِنْهُ ٱلنَّهَارَ فَإِذَا هُم مُّظْلِمُونَ
Wa Aayatul lahumul lailu naslakhu minhun nahaara fa-izaa hum muzlimoon
The night is also a sign for them: We strip the daylight from it, and- lo and behold!- they are in darkness.
Another sign for them is the night: we strip the day from it, and they are plunged into darkness.