Al-Furqan (The Distinction)

Surah 25 · Verse 62

And He it is Who has made the night and the day succeeding (each other) for one who intends to be mindful or intends to be grateful.

وَهُوَ الَّذِي جَعَلَ اللَّيْلَ وَالنَّهَارَ خِلْفَةً لِمَنْ أَرَادَ أَنْ يَذَّكَّرَ أَوْ أَرَادَ شُكُورًا