Ibn Sa'id bin Mughira once visited Umm Habibah (may Allah be pleased with her), so she served him sattu (roasted barley flour) in a bowl to drink. Then Ibn Sa'id took some water and only rinsed his mouth. Umm Habibah (may Allah be pleased with her) said: Nephew! Why don't you perform ablution? The Prophet (peace and blessings of Allah be upon him) said: After eating something cooked on fire, perform ablution.
Hadith Referenceمسند احمد / من مسند القبائل / 27406
Hadith Gradingحکم دارالسلام:مرفوعه صحيح لغيره، وهذا إسناد محتمل للتحسين