Sunan An-Nasa'i

It was narrated that 'Aishah said:""One of the things that Allah, the Mighty and Sublime, revealed"" -(one of the narrators) Al-Harith said (in his narration): ""One of the things that were revealed in the Qur'an""- ""was that ten known breast-feedings make marriage prohibited, then that was abrogated and changed to five known breast-feedings. Then the Messenger of Allah passed away when this was something that was still being recited in the Qur'an