She milked a domestic sheep for the Messenger of Allah ﷺ while she was in the house of Anas bin Malik, and its milk was mixed with water from the well in Anas's house. The cup was handed to the Messenger of Allah ﷺ, and he drank from it. When he took the cup from his mouth, Abu Bakr was on his left and an Arabi was on his right.Umar, fearing that he would give it to the Arabi, said, "Messenger of Allah, give it to Abu Bakr who is beside you."But he gave it to the Arabi on his right and said, "The one on the right, then the one on the right."
أنها حلبت لرسول الله ﷺ شاة داجن، وهي في دار أنس بن مالك، وشيب لبنها بماء من البئر التي في دار أنس، فأعطي رسول الله ﷺ القدح، فشرب منه حتى إذا نزع القدح من فيه، وعلى يساره أبو بكر، وعن يمينه أعرابي، فقال عمر: وخاف أن يعطيه الأعرابي، أعط أبا بكر يا رسول الله عندك، فأعطاه الأعرابي الذي على يمينه، ثم قال: الأيمن فالأيمن.
Bukhari narrated it in the Book of Watering (2352), and Muslim in the Book of Drinks (2029), both through Zuhri, who said, Anas bin Malik narrated to me, and he mentioned it. The wording is Bukhari's.