Sayyidah Umm Salamah (may Allah be pleased with her) related that she presented roasted ribs to the Prophet (peace and blessings be upon him); he (peace and blessings be upon him) ate, then stood up for the prayer but did not perform ablution.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 717