Narrated by Lady Aisha (may Allah be pleased with her): After the command of veiling was revealed, Aflaḥ, the brother of Abu Quays, sought permission to meet me, but I sent word that I could not meet him until I had obtained permission from the Messenger of Allah (peace and blessings be upon him) regarding this matter. I thought that Abu Quays’s brother had only suckled me a little; it was Abu Quays’s wife who had nursed me. Then the Messenger of Allah (peace and blessings be upon him) arrived, so I said to him, “O Messenger of Allah, Aflaḥ, the brother of Abu Quays, sought permission to meet me, but I sent word that I could not meet him until I had obtained permission from the Messenger of Allah (peace and blessings be upon him).” Upon this, the Messenger of Allah (peace and blessings be upon him) said, “Why did you refuse to meet your uncle?” I said, “O Messenger of Allah, Abu Quays only suckled me a little; it was his wife who nursed me.” The Messenger of Allah (peace and blessings be upon him) said, “Allow him to enter, for he is your uncle.”
Hadith Referenceاللؤلؤ والمرجان / كتاب الرضاع / 917
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 65 كتاب التفسير: 33 سورة الأحزاب: 9 باب قوله (إن تبدوا شيئاً أو تخفوه»
Brief Explanation
If a woman other than the mother breastfeeds a child, then according to the Shari‘ah she becomes the child’s milk-mother (radha‘ah mother), and her rulings become like those of the real mother. Her husband attains the status of father, and her sons attain the status of brothers. The milk-uncle (radha‘i paternal uncle), milk-aunt (radha‘i paternal aunt), milk-maternal uncle, and milk-maternal aunt—all are considered mahram (unmarriageable kin). (Raaz)