The Messenger of Allah ﷺ said, "Perform ablution after eating anything touched by fire."
حدثنا إسماعيل بن عمر حدثنا ابن أبي ذئب عن ابن شهاب عن عبد الملك بن أبي بكر عن خارجة بن زيد
قال رسول الله ﷺ توضئوا مما مست النار
Its isnad is sahih. Ismail bin Umar is Wasiti, who is one of the well-known trustworthy hadith scholars. The hadith has already appeared at .