Musnad Abu Ya'la al-Mawsili 209:107

Abu Khaythama narrated to us, Uthman ibn Umar narrated to us, Ibn Jurayj narrated to us, Ibn Yusuf informed us, from Sulayman ibn Yasar, from Umm Salamah, that she said: A roasted side of meat was brought near to the Messenger of Allah, may Allah bless him and grant him peace, and he ate from it. Then he went out and prayed, and he did not perform ablution.