Sayyiduna Abu Rafi' (may Allah be pleased with him) narrates: "I cooked the belly of a goat for the Messenger of Allah (peace and blessings be upon him). He (peace and blessings be upon him) ate from it, then prayed Isha and did not perform ablution."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 962