Sahih Muslim 1379
صحيح مسلم#1379SahihIbn Shibab reported:'Umar b. 'Abd al-'Aziz deferred the afternoon prayer somewhat and 'Urwa said to him: Gabriel came down and he led the Messenger of Allah (ﷺ) in prayer. 'Umar said to him: O 'Urwa, are you aware of what you are saying? Upon this he ('Urwa) said: I heard Bashir b. Abu Mas'ud say that he heard Abu Mas'ud say that he heard the Messenger of Allah (ﷺ) say: Gabriel came down and acted as my Imam, then I prayed with him, then I prayed with him, then I prayed with him. then I prayed with him. then I prayed with him. reckoning with his fingers five times of prayer
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 5:213