Sunan Ibn Majah, Volume 4, Book 30, Hadith 3425 (DarusSalam)

It was narrated from Anas bin Malik that the Messenger of Allah 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.”

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 ‏" ‏ ‏.‏

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