مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3717
Musnad of Abdullah bin Mas'ood
It was narrated from ‘Abdullah Concerning the verse, “The (Prophet’s) heart lied not in what he (Muhammad (ﷺ) saw" (an-Najm 53:11), that he said: The Messenger of Allah (ﷺ) saw Jibreel (as) in a suit of the finest brocade, filling the space between heaven and earth.
Musnad Ahmad 3740Its isnad is saheeh, al-Bukhari (3232) and Muslim (174)]