Sahih Muslim Book 004, Hadith Number 1014.
Chapter : The excellence of the prayer and the way it is begun and the excellence of Ruku' and moderation in it and prostration and moderation in it, etc.
Abu Juhaifa reported it on the authority of his father: I came to the Apostle of Allah (may peace be upon him) in Mecca and he was (at that time) at al-Abtah in a red leather tent. And Bilal stepped out with ablution water for him. (And what was left out of that water) some of them got it (whereas others could not get it) and (those who got it) rubbed themselves with it. Then the Apostle of Allah (may peace be upon him) stepped out with a red mantle on him and I was catching a glimpse of the whiteness of his shanks. The narrator said: He (the Holy Prophet) performed the ablution and Bilal pronounced Adhan and I followed his mouth (as he turned) this side and that as he said on the right and the left: "Come to prayer, come to success." A spear was then fixed for him (on the ground). He stepped forward and said two rak'ahs of Zuhr, while there passed in front of him a donkey and a dog, and these were not checked. He then said two rak'ahs of the 'Asr prayer, and he then continued saying two rak'ahs till he came back to Medina.