Surah Al-Qiyamah 75:9

وَجُمِعَ ٱلشَّمْسُ وَٱلْقَمَرُ

And the sun and the moon are joined,

Translation: Saheeh International

Tafsir

and the sun and the moon are brought together so that both of them will rise from the west; or it means when the light of both of them disappears — and this will be on the Day of Resurrection —

Excerpt from Tafsir al-Jalalayn, commentary on 75:9, via Quran.com. The reader has the full commentary and 9 more tafsirs.