Yahya related to me from Malik from Abu Nuaym that Wahb ibn
Kaysan said, "The Messenger of Allah, may Allah bless him and grant
him peace, was brought food while his stepson Umar ibn Salama was with
him. The Messenger of Allah, may Allah bless him and grant him peace,
said to him, 'Say "Bismillah," and eat what is in front of you.' "
Muwatta Malik Book 49, Hadith 33