"The Prophet, Abu Bakr and 'Umar ate some bread and meat, and they did not perform ablution (after that)."
Sunan Ibn Majah Book 1, Hadith 223
← Previous Hadith "The Messenger of Allah ate a shoulder, then he wiped his hands on a Mish that was underneath him, then he got up for prayer, and performed the prayer.

Sunan Ibn Majah Book 1, Hadith 222 Next Hadith → "I had dinner with Walid or Abdul-Malik. When the time for prayer came, I got up to perform ablution. Ja'far bin 'Amr bin Umayyah said: 'I bear witness that my father bore witness, that the Messenger of Allah ate food that had been changed by fire, then he performed prayer, and he did not perform ablution.' (Sahih)

And 'Ali bin 'Abdullah bin 'Abbas said: 'And I bear witness to similar from my father.'"

Sunan Ibn Majah Book 1, Hadith 224