Sahih Muslim Book 23, Hadith Number 5010.

Chapter : Etiquette relating to eating and drinking.

Salim, on the authority of his father, reported Allah’s Messenger (may peace be upon him) as saying: None of you should eat with his left hand and drink with that (left hand), for the Satan eats with left hand and drinks with that (hand). Nafi’ has made this addition in that: “Do not take up anything with that (left hand) and do not give anything with that”; and in the narration transmitted on the authority of Abu Tahir there is a slight variation of wording.