´It was narrated from 'Ata' that Ibn 'Abbas said to Zaid bin Arqam:` "Do you not know that the Prophet was given a piece of game meant when he was in Ihram and he did not accept it?" He said: "Yes."
Related hadith on this topic
Explanation & Benefits
Hafiz Muhammad Ameen
This narration indicates that the animal was not presented alive in your (sallallahu alayhi wa sallam) service, rather a piece of a slaughtered animal was presented. The Hanafis say that you (sallallahu alayhi wa sallam) returned it because he had presented a live game, and slaughtering is not permissible for a person in the state of ihram. However, if that had been the case, you (sallallahu alayhi wa sallam) could have said, "Slaughter it and bring it." This narration refutes the position of the Hanafis. The correct explanation has already passed under Hadith number 2821.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2823