Sahih al-Bukhari 7033
صحيح البخاري#7033SahihNarated Ubaidullah bin Abdullah:I asked Ibn Abbas about the dream of Allah's Messenger which he mentioned. (see following hadith)
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: 91:48