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.

أَنَّ رَجُلاً أَكَلَ عِنْدَ رَسُولِ اللَّهِ ﷺ بِشِمَالِهِ فَقَالَ كُلْ بِيَمِينِكَ قَالَ لاَ أَسْتَطِيعُ قَالَ لاَ اسْتَطَعْتَ مَا مَنَعَهُ إِلاَّ الْكِبْرُ قَالَ فَمَا رَفَعَهَا إِلَى فِيهِ