(18) باب الأَيْمَنَ فَالأَيْمَنَ فِي الشُّرْبِ
Narrated Anas bin Malik:
Milk mixed with water was brought to Allah's Messenger (ﷺ) while a bedouin was on his right and Abu Bakr was on his left. He drank (of it) and then gave (it) to the bedouin and said, 'The right" "The right (first).
Reference: Sahih al-Bukhari 5619
In-book reference: Book 74, Hadith 45
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 69, Hadith 523