وَعَنْ عُمَرَ بْنِ أَبِي سَلَمَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: كُنْتُ غُلَامًا فِي حِجْرِ رَسُولِ اللَّهِ ﷺ، وَكَانَتْ يَدِي تَطِيشُ فِي الصَّحْفَةِ، فَقَالَ لِي رَسُولُ اللَّهِ ﷺ: «سَمِّ اللَّهَ، وَكُلْ بِيَمِينِكَ، وَكُلْ مِمَّا يَلِيكَ».
Translation: ʿUmar ibn Abi Salamah said that he was a boy in the care of the Messenger of Allah ﷺ, and his hand moved around the shared dish. The Prophet ﷺ told him: “Mention Allah’s name, eat with your right hand, and eat from what is near you.”
The instruction identifies a problem and gives a clear alternative method. تَطِيشُ indicates the hand moving about, and الصَّحْفَةِ means the food dish.
Sources: Bukhari and Muslim