Sahih Muslim
The Book of Pilgrimage (Kitab Al-Hajj)
Book Number: 007 / Hadith Number: 2709
This hadith pertaining to the wild ass is reported on the authority of Abu Qatada. The rest of the hadith is the same but with this (variation of words) that the Messenger of Allah (may peace be upon him) said:" Is there with you some of its flesh?"