The last practice of the Messenger of Allah (ﷺ) was that he did not perform ablution after taking anything that was cooked with the help of fire.

Abu Dawud said: This is the abridgment of the former tradition.
Sunan Abi Dawud Book 1, Hadith 192
← Previous Hadith I heard Jabir b. 'Abd Allah say: I presented bread and meat to the Prophet (ﷺ). He ate them and called for ablution water. he performed ablution and offered the noon (Dhuhr) prayer. He then called for the remaining food and ate it. He then got up and prayed and did not perform ablution.

Sunan Abi Dawud Book 1, Hadith 191 Next Hadith → One of the Companions of the Prophet (may peace be upon), came upon us in Egypt. When he was narrating traditions in the Mosque of Egypt, I heard him say: I was the seventh or the sixth person in the company of the Messenger of Allah ( peace be upon him) in the house of a person.

In the meantime Bilal came and called him for prayer. He came out and passed by a person who had his fire-pan on the fire. The Messenger of Allah (ﷺ) said to him: Has the food in the fire-pan been cooked? He replied: Yes, my parents be sacrificed upon you. He then took a piece out of it and continued to chew it until he uttered the first takbir (AllahuAkbar) of the prayer. All this time I was looking at him.

Sunan Abi Dawud Book 1, Hadith 193