وَمِن آياتِهِ مَنامُكُم بِاللَّيلِ وَالنَّهارِ وَابتِغاؤُكُم مِن فَضلِهِ ۚ إِنَّ في ذٰلِكَ لَآياتٍ لِقَومٍ يَسمَعونَ

And among His signs is your sleep, during both night and day, and your pursuit of His bounty. In that are signs for people who would hear.