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."
Sahih al-Bukhari Book 9, Hadith 26