Narrated 'Abdullah bin 'Abbas:

That he heard As-Sa'b bin Jaththama 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)

حَدَّثَنَا أَبُو الْيَمَانِ، أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، قَالَ أَخْبَرَنِي عُبَيْدُ اللَّهِ بْنُ عَبْدِ اللَّهِ بْنِ عُتْبَةَ، أَنَّ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ ـ رضى الله عنهما ـ أَخْبَرَهُ أَنَّهُ، سَمِعَ الصَّعْبَ بْنَ جَثَّامَةَ اللَّيْثِيَّ،، وَكَانَ، مِنْ أَصْحَابِ النَّبِيِّ ﷺ يُخْبِرُ أَنَّهُ أَهْدَى لِرَسُولِ اللَّهِ ﷺ حِمَارَ وَحْشٍ وَهْوَ بِالأَبْوَاءِ ـ أَوْ بِوَدَّانَ ـ وَهْوَ مُحْرِمٌ فَرَدَّهُ، قَالَ صَعْبٌ فَلَمَّا عَرَفَ فِي وَجْهِي رَدَّهُ هَدِيَّتِي قَالَ " لَيْسَ بِنَا رَدٌّ عَلَيْكَ، وَلَكِنَّا حُرُمٌ ".