Sahih al-Bukhari 6989
صحيح البخاري#6989SahihNarrated Abu Sa`id Al-Khudri:I heard Allah's Messenger (ﷺ) saying, "A good dream is a part of the forty six parts of prophetism
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: 91:8