(14) باب شَوْبِ اللَّبَنِ بِالْمَاءِ
Narrated Anas bin Malik:
I saw Allah's Messenger (ﷺ) drinking milk. He came to my house and I milked a sheep and then mixed the milk with water from the well for Allah's Messenger (ﷺ). He took the bowl and drank while on his left there was sitting Abu Bakr, and on his right there was a bedouin. He then gave the remaining milk to the bedouin and said, "The right! The right (first).
Reference: Sahih al-Bukhari 5612
In-book reference: Book 74, Hadith 38
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 69, Hadith 516