Musnad Ahmad 333:8

Bahz narrated to us, he said: ‘Ikrimah ibn ‘Ammar al-Yamami narrated to us, he said: Iyas ibn Salamah ibn al-Akwa‘ narrated to us, that his father narrated to him, he said: I heard the Messenger of Allah (may Allah bless him and grant him peace) say to a man who was called Busr ibn Ra‘i al-‘Ayr, as he saw him eating with his left hand: "Eat with your right hand." He said: I cannot. He said: "May you not be able to." He said: His right hand did not reach his mouth after that. Abu al-Nadr said in his narration: Ibn Ra‘i al-‘Ayr is from [the tribe of] Ashja‘.