Sahih al-Bukhari 549
صحيح البخاري#549SahihNarrated Abu Bakr bin `Uthman bin Sahl bin Hunaif:that he heard Abu Umama saying: We prayed the Zuhr prayer with `Umar bin `Abdul `Aziz and then went to Anas bin Malik and found him offering the `Asr prayer. I asked him, "O uncle! Which prayer have you offered?" He said 'The `Asr and this is (the time of) the prayer of Allah's Apostle which we used to pray with him
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 9:26