Sahih Muslim 2021
Sahih Muslim · Book 36: The Book of Drinks · The etiquette of eating and drinking, and rulings thereon
Salama b. Akwa' reported on the authority of his father that a person ate in the presence of Allah's Messenger (ﷺ) with his left hand, whereupon he said:
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ، حَدَّثَنَا زَيْدُ بْنُ الْحُبَابِ ، عَنْ عِكْرِمَةَ بْنِ عَمَّارٍ ، حَدَّثَنِي إِيَاسُ بْنُ سَلَمَةَ بْنِ الأَكْوَعِ ، أَنَّ أَبَاهُ ، حَدَّثَهُ أَنَّ رَجُلاً أَكَلَ عِنْدَ رَسُولِ اللَّهِ صلى الله عليه وسلم بِشِمَالِهِ فَقَالَ " كُلْ بِيَمِينِكَ " . قَالَ لاَ أَسْتَطِيعُ قَالَ " لاَ اسْتَطَعْتَ " . مَا مَنَعَهُ إِلاَّ الْكِبْرُ . قَالَ فَمَا رَفَعَهَا إِلَى فِيهِ .
Eat with your right hand. He said: I cannot do that, whereupon he (the Holy Prophet) said: May you not be able to do that. It was vanity that prevented him from doing it, and he could not raise it (the right hand) up to his mouth.