وَهُوَ ٱلَّذِى جَعَلَ ٱلَّيْلَ وَٱلنَّهَارَ خِلْفَةً لِّمَنْ أَرَادَ أَن يَذَّكَّرَ أَوْ أَرَادَ شُكُورًا

Wahuwa allathee jaAAala allayla wannaharakhilfatan liman arada an yaththakkara aw aradashukoora

And it is He who has made the night and the day in succession for whoever desires to remember or desires gratitude.