Yahya related to me from Malik from Nafi that Safiyya bint AbiUbayd told him that Hafsa, umm al-muminin, sent Asim ibn Abdullah ibnSad to her sister Fatima bint Umar ibn al-Khattab for her to sucklehim ten times so that he could come in to see her. She did it, so heused to come in to see her.
USC-MSA web (English) reference: Book 30, Hadith 8
Arabic reference: Book 30, Hadith 1282