It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "When any one of you eats food, he should not eat or drink with his left hand, for Satan eats and drinks with his left hand."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5847
Hadith Gradingحکم دارالسلام:حديث صحيح، العمري وإن كان ضعيفا، توبع