Sahih al-Bukhari Book 10, Hadith 68
The Prophet (ﷺ) said, "If anyone of you is having his meals, he should not hurry up
till he is; satisfied even if the prayer has been started."
Ibn `Umar said, "Allah's Messenger (ﷺ) said, 'If the supper is served for anyone of you and the Iqama is pronounced, start with the supper and don't be in haste (and carry on eating) till you finish it." If food was served for Ibn `Umar and Iqama was pronounced, he never came to the prayer till he finished it (i.e. food) in spite of the fact that he heard the recitation (of the Qur'an) by the Imam (in the prayer).
My father said, "I saw Allah's Messenger (ﷺ) eating a piece of meat from the shoulder of a sheep and he was called for the prayer. He stood up, put down the knife and prayed but did not perform ablution.''