Surah Ar-Rahman 55:5
ٱلشَّمْسُ وَٱلْقَمَرُ بِحُسْبَانٍ
The sun and the moon [move] by precise calculation,
Translation: Saheeh International
Tafsir
The sun and the moon follow a reckoning they move according to a strict calculation
Excerpt from Tafsir al-Jalalayn, commentary on 55:5, via Quran.com. The reader has the full commentary and 9 more tafsirs.