عَن عمر بن أبي سَلمَة قَالَ: كُنْتُ غُلَامًا فِي حِجْرِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَكَانَتْ يَدِي تَطِيشُ فِي الصفحة. فَقَالَ لِي رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ «سم الله وكل يَمِينك وكل مِمَّا يليك»

Ibn ‘Umar reported God’s messenger as saying, “When any of you eats he should eat with his right hand, and when he drinks he should drink with his right hand.” Muslim transmitted it.