When one of you eats, let him eat with his right hand, and when he drinks, let him drink with his right hand, for, indeed, the devil eats with his left hand and drinks with his left hand. [Muslim]

عن ابن عمر -ما- أن رسول الله -صلى الله عليه وسلم- قال: «إذا أَكَلَ أحدُكم فَلْيَأْكُلْ بِيَمِينِه، وإذا شَرِب فَلْيَشْرَبْ بِيَمِينِه فإنَّ الشيطان يأكلُ بِشِمَالِه، ويَشْرَب بِشِمَالِه». (مسلم)