Sahih Muslim 7079
صحيح مسلم#7079SahihIbn 'Abbas reported that the moon was split up during the lifetime of Allah's Messenger (may peace he upon him)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 52:34