The Book of Pilgrimage (Kitab Al-Hajj)
Muslim :: Book 7 : Hadith 2705
The narration transmitted by Hakam (the words are): Al-Sa'b b. Jaththama presented to the Apostle of Allah (may peace be upon him) the leg of a wild ass. And in the narration transmitted by Shu'ba (the words are): (He presented to him) the rump of a wild ass as the blood was trickling from it. In the narration transmitted by Shu'ba on the authority of Habib (the words are): A part of a wild ass was presented to the Apostle (may peace he upon him) and he returned it to him (who presented it).