Sura al-Furqān 25:62

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

wa-huwa alladhī jaʿala l-layla wa-l-nahāra khilfatan li-man arāda an yadhdhakkara aw arāda shukūran

And it is He Who made the Night and the Day to follow each other: for such as have the will to celebrate His praises or to show their gratitude.