Yahya related to me from Malik from Nafi that Salim ibn Abdullahibn Umar informed him that A'isha umm al-muminin sent him away whilehe was being nursed to her sister Umm Kulthum bint Abi Bakr as-Siddiqand said, "Suckle him ten times so that he can come in to see me."Salim said, "Umm Kulthum nursed me three times and then fellill, so that she only nursed me three times. I could not go in to seeA'isha because Umm Kulthum did not finish for me the ten times."
USC-MSA web (English) reference: Book 30, Hadith 7
Arabic reference: Book 30, Hadith 1281