It is narrated from Sayyidah Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: Perform ablution after eating something cooked on fire.

Muhammad bin Tahlah says: I said to Abu Salamah: Your foster father Sulaim does not perform ablution after eating something cooked on fire. Upon hearing this, he struck his hand on Sulaim’s chest and said: I bear witness before the wife of the Prophet, Sayyida Umm Salamah (RA), that she testified about the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) used to perform ablution after eating something cooked on fire.

Abu Sufyan bin Saeed bin Mughira went to the wife of the Messenger, Lady Umm Habibah (may Allah be pleased with her), who was his maternal aunt. She gave him a bowl of sattu to drink, then he asked for water and rinsed his mouth, but the Lady said: O nephew! Will you not perform ablution? Because the Messenger of Allah, peace and blessings be upon him, said: Perform ablution from whatever has been cooked over fire.

(Second chain) Abu Sufyan went to Lady Umm Habibah (RA), she gave him sattu to drink, he drank the sattu and stood up to pray, but the lady said: Nephew! Perform ablution, because I heard the Messenger of Allah, peace and blessings be upon him, say: Perform ablution after eating anything that has been touched by fire.

(Third chain) There is a similar narration, except that in it: The lady said: Dear son! Never perform prayer until you have performed ablution, because the Messenger of Allah, peace and blessings be upon him, commanded us that whatever food is cooked over fire, after eating it we should perform ablution.