Sahih Muslim | Book 3 | Hadith Number 692
Narrated by Ja'far b. 'Amr b. Umayya al-Damari
Ja'far b. 'Amr b. Umayya al-Damari reported on the authority of his father who said: I saw the Messenger of Allah (may peace be upon him) take slices from goat's shoulder and then eat them. He was called for prayer and he got up, leaving aside the knife, and offered prayer but did not perform ablution.