Yahya related to me from Malik from Abd ar-Rahman ibn al-Qasim that his father told him that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, admitted those whom her sisters and the daughters of her brother had nursed, and she did not admit those who were nursed by the wives of her brothers.
Muwatta Malik Book 30, Hadith 9
← Previous Hadith Yahya related to me from Malik from Nafi that Safiyya bint Abi Ubayd told him that Hafsa, umm al-muminin, sent Asim ibn Abdullah ibn Sad to her sister Fatima bint Umar ibn al-Khattab for her to suckle him ten times so that he could come in to see her. She did it, so he used to come in to see her.

Muwatta Malik Book 30, Hadith 8 Next Hadith → Yahya related to me from Malik that Ibrahim ibn Uqba asked Said ibn al-Musayyab about suckling. Said said, "All that occurs in the first two years, even if it is only a drop, makes haram. Whatever is after two years, is only food that is eaten."

Ibrahim ibn Uqba said, ''Then I asked Urwa ibn az-Zubayr and he told me the same as what Said ibn al-Musayyab said."

Muwatta Malik Book 30, Hadith 10