Sahih Muslim 2019
Sahih Muslim · Book 36: The Book of Drinks · The etiquette of eating and drinking, and rulings thereon
Jabir b. 'Abdullah reported Allah's Messenger (ﷺ) having said:
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا لَيْثٌ ، ح وَحَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ ، أَخْبَرَنَا اللَّيْثُ ، عَنْ أَبِي الزُّبَيْرِ ، عَنْ جَابِرٍ ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ تَأْكُلُوا بِالشِّمَالِ فَإِنَّ الشَّيْطَانَ يَأْكُلُ بِالشِّمَالِ " .
Do not eat with your left hand, for the Satan eats with his left hand.