Ar-Rum · 30:23

23. From among His great signs which prove His power and oneness, is your sleeping by night and wakefulness by day, so that you may rest from the tiredness of your work. And from among His signs is that He made the day so that you may disperse, seeking sustenance from your Lord. Indeed, in the aforementioned are proofs and evidences for people who listen attentively while contemplating and accepting.