Qur'an · Ar-Room 30:23
سُورَةُ الرُّومِ
وَمِنْ ءَايَٰتِهِۦ مَنَامُكُم بِٱلَّيْلِ وَٱلنَّهَارِ وَٱبْتِغَآؤُكُم مِّن فَضْلِهِۦٓ ۚ إِنَّ فِى ذَٰلِكَ لَءَايَٰتٍۢ لِّقَوْمٍۢ يَسْمَعُونَ ﴿23﴾
“And of His signs is your sleep by night and day and your seeking of His bounty. Indeed in that are signs for a people who listen.”
Saheeh International translation
Explanation · Al-Mukhtasar
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.
Reflection
Sleep by night and day is listed as one of Allah's signs, next to seeking His bounty. Rest is not the opposite of worship; it is part of the design.