Sahih Muslim 7073
صحيح مسلم#7073SahihAbdullah b. Mas'ud reported that the moon was split up in two parts during the lifetime of Allah's Messenger (ﷺ). The mountain covered one of its parts and one part of it was above the mountain and Allah's Messenger (ﷺ) said:Bear witness to this
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: 52:29