Sunnan Abu Dawud Collection: ::Book Number 10:: Hadith # 1845
Narrated Ali ibn AbuTalib: Abdullah ibn al-Harith reported on the authority of his father al-Harith: (My father) al-Harith was the governor of at-Ta'if under the caliph Uthman. He prepared food for Uthman which contained birds and the flesh of wild ass. He sent it to Ali (may Allah be pleased with him). When the Messenger came to him he was beating leaves for camels and shaking them off with his hand. He said to him: Eat it. He replied: Give it to the people who are not in sacred state; we are wearing ihram. I adjure the people of Ashja' who are present here. Do you know that a man presented a wild ass to the Apostle of Allah (peace_be_upon_him) while he was in ihram? But he refused to eat from it. They said: Yes.