مختصر صحيح مسلم
Mukhtasar Sahih Muslim
Issues of Food
Eating with the right hand.
It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: When any of you eats, let him eat with his right hand, and when he drinks, let him drink with his right hand, for indeed Satan eats with his left hand and drinks with his left hand.