(2) باب تَحْرِيمِ الرَّضَاعَةِ مِنْ مَاءِ الْفَحْلِ
'A'isha (Allah be pleased with her) reported that her foster-uncle whose name was Aflah sought permission from her (to enter the house) but she observed seclusion from him, and informed Allah's Messenger (ﷺ) who said to her:
Don't observe veil from him for he is Mahram (one with whom marriage cannot be contracted) on account of fosterage as one is Mahram on account of consanguinity. (RU)
Reference (RU): Sahih Muslim 1445 i (RU)
In-book reference (RU): Book 17, Hadith 12 (RU)
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3405 (RU)