It is narrated from Sayyidah Umm Hakim (may Allah be pleased with her); she said: "The Messenger of Allah (peace and blessings be upon him) came to me and ate a shoulder of meat. Then Bilal (may Allah be pleased with him) came and informed him of the prayer, so he (peace and blessings be upon him) prayed and did not perform ablution."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21675