Sahih al-Bukhari 2596
صحيح البخاري#2596SahihNarrated `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 Messenger (ﷺ) while he was at a place called Al-Abwa' or Waddan, and was in a state of Ihram. The Prophet (ﷺ) did not accept it. When the Prophet (ﷺ) 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)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 51:30