It was narrated that 'Aishah said:
"Once of the things that Allah revealed in the the Qur'an and then abrogated was that nothing makes marriage prohibited except ten breastfeedings or five well-known (breastfeedings)." (AR)
English reference (AR): Vol. 3, Book 9, Hadith 1942 (AR)
Arabic reference (AR): Book 9, Hadith 2018 (AR)