Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrated that Sayyiduna al-Sa'b bin Jaththamah (may Allah be pleased with him) presented the Messenger of Allah (peace and blessings be upon him), while he (peace and blessings be upon him) was at Qudayd, with the thigh of a donkey, or he said: the hindquarters of a wild ass, as a gift. He (peace and blessings be upon him) returned it while it was dripping with blood, and he (peace and blessings be upon him) was in the state of ihram.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12314