وَاٰيَةٌ لَّهُمُ الَّيۡلُۚۖ نَسۡلَخُ مِنۡهُ النَّهَارَ فَاِذَا هُمۡ مُّظۡلِمُوۡنَۙ‏

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