The Prophet ﷺ used his right hand for taking his food and drink and used his left hand for other purposes.
حَدَّثَتْنِي حَفْصَةُ زَوْجُ النَّبِيِّ ﷺ أَنَّ النَّبِيَّ ﷺ كَانَ يَجْعَلُ يَمِينَهُ لِطَعَامِهِ وَشَرَابِهِ وَثِيَابِهِ وَيَجْعَلُ شِمَالَهُ لِمَا سِوَى ذَلِكَ