Narrated As-Sa'b bin Jath-thama: An onager was presented to Allah's Apostle at the place called Al-Abwa' or Waddan, but Allah's Apostle rejected it. When the Prophet noticed the signs of sorrow on the giver's face he said, "We have not rejected your gift, but we are in the state of Ihram." (i.e. if we were not in a state of Ihram we would have accepted your gift, Fath-ul-Bari page 130, Vol. 6)

Narrated `Abdullah bin `Abbas: From As-Sa'b bin Jath-thama Al-Laithi that the latter presented an onager to Allah's Apostle while he was at Al-Abwa' or at Waddan, and he refused it. On noticing the signs of some unpleasant feeling of disappointment on his (As-Sab's) face, the Prophet said to him, "I have only returned it because I am Muhrim."

Narrated `Abdullah bin `Abbas: That he heard As-Sa'b bin Jath-thama Al-Laithi, who was one of the companions of the Prophet, saying that he gave the meat of an onager to Allah's Apostle while he was at a place called Al-Abwa' or Waddan, and was in a state of Ihram. The Prophet did not accept it. When the Prophet saw the signs of sorrow on As-Sa'b's face because of not accepting his present, he said (to him), "We are not returning your present, but we are in the state of Ihram." (See Hadith No. 747)