Sahih al-Bukhari 4923
صحيح البخاري#4923SahihNarrated Jabir bin `Abdullah:The Prophet (ﷺ) said, "I was in a seclusion in the cave of Hira........."(similar to the narration related by `Ali bin Al-Mubarak, 444 above)
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: 65:443