أَلَم تَرَ أَنَّ اللَّهَ يولِجُ اللَّيلَ فِي النَّهارِ وَيولِجُ النَّهارَ فِي اللَّيلِ وَسَخَّرَ الشَّمسَ وَالقَمَرَ كُلٌّ يَجري إِلىٰ أَجَلٍ مُسَمًّى وَأَنَّ اللَّهَ بِما تَعمَلونَ خَبيرٌ

Do you not see that Allah causes the night to enter the day and causes the day to enter the night and has subjected the sun and the moon, each running [its course] for a specified term, and that Allah, with whatever you do, is Acquainted?