The ruling on eating from the Adhha sacrifice
Question :
Is it allowed for the person who performs the Adhha sacrifice to eat from the meat of his sacrifice?
Question :
It is recommended for whoever has a sacrificial animal for Adhha to not eat any of it until he has offered the 'Eid prayer. Then he slaughters his sacrificial animal and he eats from it. He makes it the first thing that he eats from if that is easy for him. This is the view of most of the people of knowledge, including 'Ali, Ibn 'Abbas, Malik, Ash-Shafi'i and others besides them. At-Tirmithi and Al-Athram both recorded from Buraidah that he said: "The Prophet used not to go out on the day of ('Eid) Al-Fitr until he had eaten breakfast, and he would not eat on the day of ('Eid) Al-Adhha until he had prayed (i.e., the 'Eid prayer)."
In the narration of Al-Athram, he said: "until he had sacrificed his Adhha animal." Imam Ahmad said: "He does not eat during that day until he returns (home after sacrificing) if he had an animal to slaughter, because the Prophetate from his slaughtered animal." If he does not have a slaughter animal, it makes no difference if he eats (beforehand), and there is no sin on him in eating before the prayer or after it from other than his sacrificial animal. And Allâh knows best.
Source:
The Permanent Committee
Fatawa Islamiyah, Vol. 4 Page 335