Sunan an-Nasa'i
It was narrated from As-Sab bin Jaththamah that: the Prophet (ﷺ) came, and when he was in Waddan, he saw an onager, but he gave it back to him and said: "'We are in Ihram, we cannot eat game.'"
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ صَالِحِ بْنِ كَيْسَانَ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، عَنِ الصَّعْبِ بْنِ جَثَّامَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم أَقْبَلَ حَتَّى إِذَا كَانَ بِوَدَّانَ رَأَى حِمَارَ وَحْشٍ فَرَدَّهُ عَلَيْهِ وَقَالَ " إِنَّا حُرُمٌ لاَ نَأْكُلُ الصَّيْدَ " .
Grade: Sahih (Darussalam)
Reference