Surah An-Najm 53:18

لَقَدْ رَأَىٰ مِنْ ءَايَـٰتِ رَبِّهِ ٱلْكُبْرَىٰٓ

He certainly saw of the greatest signs of his Lord.

Translation: Saheeh International

Tafsir

Verily he saw in it some of the greatest signs of his Lord some of the most awesome of these signs. He thus saw from among the marvels of the Realm malakūt a green drape rafraf that obscured the entire horizon of the heaven and Gabriel with his six hundred wings.

Excerpt from Tafsir al-Jalalayn, commentary on 53:18, via Quran.com. The reader has the full commentary and 9 more tafsirs.