Narrated `Abdullah bin `Abbas
Allah's Messenger (ﷺ) ate a piece of cooked mutton from the shoulder region and prayed without repeating ablution.
Narrated Ja`far bin `Amr bin Umaiya
My father said, "I saw Allah's Messenger (ﷺ) taking a piece of (cooked) mutton from the shoulder region and then he was called for prayer. He put his knife down and prayed without repeating ablution."