Silsilat al-Ahadith al-Sahihah

Sayyiduna Umar bin Abu Salamah (may Allah be pleased with him) says: I was a boy under the care of the Messenger of Allah (peace and blessings of Allah be upon him), and while eating, my hand began to wander around the plate (i.e., I started eating from different places). So the Messenger of Allah (peace and blessings of Allah be upon him) said to me: "O boy! When you begin to eat, say 'Bismillah', eat with your right hand, and eat from what is in front of you."