(8) باب إِنَّمَا الرَّضَاعَةُ مِنَ الْمَجَاعَةِ
'A'isha (Allah be pleased with her) reported:
Allah's Messenger (ﷺ) visited me when a man was sitting near me, and he seemed to disapprove of that. And I saw signs of anger on his face and I said: Messenger of Allah, he is my brother by forsterage, whereupon he said: Consider who your brothers are because of fosterage since fosterage is through hunger (i. e. in infancy).
Reference: Sahih Muslim 1455 a
In-book reference: Book 17, Hadith 39
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3430