Surah An-Naba 78:9
وَجَعَلْنَا نَوْمَكُمْ سُبَاتًا
And made your sleep [a means for] rest
Translation: Saheeh International
Tafsir
and made your sleep for rest? repose for your bodies
Excerpt from Tafsir al-Jalalayn, commentary on 78:9, via Quran.com. The reader has the full commentary and 9 more tafsirs.