(52) باب لَبَنِ الْفَحْلِ .
It was narrated that 'Aishah said:
"Aflah, the brother of Abu Al-Qu'ais, came and asked permission to enter, and I said: 'I will not let him in until I seek the permission of the Prophet of Allah.' When the Prophet of Allah came, I said to him: 'Aflah, the brother of Abu Al-Qu'ais, came and asked permission to enter, but I refused to let him in.' He said: 'Let him in, for he is your paternal uncle.' I said: 'The wife of Abu Al-Qu'ais breast-fed me; the man did not breast-feed me.' He said: 'Let him in, for he is your paternal uncle.'"
Reference: Sunan an-Nasa'i 3318
In-book reference: Book 26, Hadith 123
English translation: Vol. 4, Book 26, Hadith 3320