When drinking, the (vessel) should be passed around to the right
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا مَالِكُ بْنُ أَنَسٍ، عَنِ الزُّهْرِيِّ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ أُتِيَ بِلَبَنٍ قَدْ شِيبَ بِمَاءٍ وَعَنْ يَمِينِهِ أَعْرَابِيٌّ وَعَنْ يَسَارِهِ أَبُو بَكْرٍ فَشَرِبَ ثُمَّ أَعْطَى الأَعْرَابِيَّ وَقَالَ " الأَيْمَنُ فَالأَيْمَنُ " .
It was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) was brought some milk mixed with water. On his right there was a Bedouin and on his left was Abu Bakr. He drank some, then he gave it to the Bedouin and said: “Pass it around to the right.”