Ayesha reported,

Someone sought permission to enter from Aflah bin Qays, but I refused to grant him admission. He then sent word saying, "I am your uncle, since the wife of my brother nursed you," yet I still refused to let him in.When the Messenger of Allah ﷺ came, I mentioned this to him, and he said, "Let him enter, for he is indeed your uncle."

Azami 6687

Sahih

عن عائشة قالت

استأذن على أفلح بن قيس فأبيت أن آذن، فأرسل: إني عمك، أرضعتك امرأة أخي، فأبيت أن آذن له، فجاء رسول الله ﷺ فذكرت ذلك له فقال: ليدخل عليك، فإنه عمك.

الأعظمي 6687صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Breastfeeding
Section
Milk kinship through the husband
Numbering
Jami al-Kamil 6687 (2nd edition)
Azami 6687