Hadith 749
Kharijah bin Zaid Ansari reported that his father, Sayyiduna Zaid bin Thabit (may Allah be pleased with him), heard the Messenger of Allah (peace and blessings be upon him) say: "Ablution is required after eating what has been cooked on fire." Imam Darimi (may Allah have mercy on him) was asked: Do you act upon this? He replied: No.