Surah Ash-Shams 91:6

وَٱلْأَرْضِ وَمَا طَحَىٰهَا

And [by] the earth and He who spread it

Translation: Saheeh International

Tafsir

and by the earth and the One Who spread it laid out flat.

Excerpt from Tafsir al-Jalalayn, commentary on 91:6, via Quran.com. The reader has the full commentary and 9 more tafsirs.