Musnad Abu Ya'la al-Mawsili 154:74

'Abdullah ibn 'Umar ibn Aban narrated to us, 'Abdur-Rahim ibn Sulayman narrated to us, from 'Ubaydullah ibn 'Umar, from al-Zuhri, from Abu Bakr ibn 'Ubaydullah ibn 'Abdullah ibn 'Umar, from Ibn 'Umar, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "None of you should eat with his left hand, for the devil eats with his left hand and drinks with his left hand."