YAA SIIN — Ayat 37

وَآيَةٌ لَّهُمْ اللَّيْلُ نَسْلَخُ مِنْهُ النَّهَارَ فَإِذَا هُم مُّظْلِمُونَ

And a sign for them is the night. We remove from it [the light of] day, so they are [left] in darkness.