Volume 4, Book 54, Number 444:
Narrated Ibn Shihab:
Once Umar bin Abdul Aziz delayed the ‘Asr prayer a little. ‘Urwa said to him, “Gabriel descended
and led the prayer in front of the Prophet ” On that ‘Umar said, “O Urwa! Be sure of what you say.”
“Urwa, “I heard Bashir bin Abi Masud narrating from Ibn Masud who heard Allah’s Apostle saying,
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SAHIH BUKHARI VOLUME 4 > BOOK 54: BEGINNING OF CREATION
‘Gabriel descended and led me in prayer; and then prayed with him again, and then prayed with him
again, and then prayed with him again, and then prayed with him again, counting with his fingers
five prayers.”