Sahih al-Bukhari 3393
صحيح البخاري#3393SahihNarrated Malik bin Sasaa:Allah's Messenger (ﷺ) talked to his companions about his Night Journey to the Heavens. When he reached the fifth Heaven, he met Aaron. (Gabriel said to the Prophet), "This is Aaron." The Prophet (ﷺ) said, "Gabriel greeted and so did I, and he returned the greeting saying, 'Welcome, O Pious Brother and Pious Prophet
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: 60:67