Musannaf Ibn Abi Shayba 16:209

Abu Bakr narrated to us, he said: Yazid bin Harun narrated to us, he said: Hisham bin Hassan informed us, from Abdullah bin Dihqan, from Anas bin Malik, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When one of you eats, let him eat with his right hand, and let him drink with his right hand, for indeed the Shaytan eats with his left hand and drinks with his left hand."