Surah Al-Jinn 72:19

وَأَنَّهُۥ لَمَّا قَامَ عَبْدُ ٱللَّهِ يَدْعُوهُ كَادُوا۟ يَكُونُونَ عَلَيْهِ لِبَدًا

And that when the Servant [i.e., Prophet] of Allāh stood up supplicating Him, they almost became about him a compacted mass."

Translation: Saheeh International

Tafsir

And that annahu; or innahu as a new sentence the pronoun being that of the matter when the servant of God the Prophet Muhammad (s) rose to invoke Him to worship Him at Batn Nakhla they that is the jinn listening to his recitation were almost upon him in heaps libadan or lubadan the plural of libda or lubda like felt …

Excerpt from Tafsir al-Jalalayn, commentary on 72:19, via Quran.com. The reader has the full commentary and 9 more tafsirs.