Sahih al-Bukhari 4867
صحيح البخاري#4867SahihNarrated Anas:The people of Mecca asked the Prophet (ﷺ) to show them a sign (miracle). So he showed them (the miracle) of the cleaving of the moon
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 65:388