Sunan Ibn Majah
1942
Sahih+3

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).”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi