Book 20, Number 20.45.154:

Yahya related to me from Malik from Hisham ibn Urwa from his father that the man who was in charge of the sacrificial animal of the Messenger of Allah, may Allah bless him and grant him peace, said, "Messenger of Allah, what should I do with a sacrificial animal that gets injured?" The Messenger of Allah, may Allah bless him and grant him peace, said to him, "Slaughter any sacrificial animal that is injured. Then throw the garlands in its blood, and then give the people a free hand in eating it.