THE RIGHT HAS PREFERENCE H 767 "Milk mixed with water was brought to the Prophet, praise and peace be upon him, at his right there sat a Bedouin Arab and at his left Abu Bakr. He drank some and handed the rest to the Bedouin Arab saying, 'The right has preference.'" R 767 Bukhari and Muslim with a chain up to Anas related that the Prophet, praise and peace be upon him, said this.
759- وعن أنس رضي الله عنه : أنَّ رسول الله صلى الله عليه وآله وسلم أُتِيَ بِلَبَنٍ قَدْ شِيبَ بماءٍ ، وَعَنْ يَمِينهِ أعْرَابيٌّ ، وَعَنْ يَسَارِهِ أَبُو بَكْر رضي الله عنه ، فَشَرِبَ ، ثُمَّ أعْطَى الأعْرابيَّ ، وقال : "الأيْمَنَ فالأيْمَنَ" متفق عَلَيْهِ . قَوْله : "شِيب" أيْ : خُلِطَ .