Volume 5, Book 59, Number 344:
Narrated Az-Zuhri:
I heard ‘Urwa bin Az-Zubair talking to ‘Umar bin ‘Abdul ‘Aziz during the latter’s Governorship (at
Medina), he said, “Al-Mughira bin Shu’ba delayed the ‘Asr prayer when he was the ruler of Al-Kufa.
On that, Abu Mas’ud. ‘Uqba bin ‘Amr Al-Ansari, the grand-father of Zaid bin Hasan, who was one of
the Badr warriors, came in and said, (to Al-Mughira), ‘You know that Gabriel came down and
offered the prayer and Allah’s Apostle prayed five prescribed prayers, and Gabriel said (to the Proph –
et ), “I have been ordered to do so (i.e. offer these five prayers at these fixed stated hours of the day).”