Ar-Rum - 30:23

وَمِنْ آيَاتِهِ مَنَامُكُم بِاللَّيْلِ وَالنَّهَارِ وَابْتِغَاؤُكُم مِّن فَضْلِهِ إِنَّ فِي ذَلِكَ لَآيَاتٍ لِّقَوْمٍ يَسْمَعُونَ
[30:23]
And one of His signs is your sleeping and your seeking of His grace by night and (by) day; most surely there are signs in this for a people who would hear.
And among His Signs is the sleep that ye take by night and by day, and the quest that ye (make for livelihood) out of His Bounty: verily in that are signs for those who hearken.
And of His signs is your slumber by night and by day, and your seeking of His bounty. Lo! herein indeed are portents for folk who heed.