Sahih al-Bukhari 5043
صحيح البخاري#5043SahihNarrated Abu Wail:We went to `Abdullah in the morning and a man said, "Yesterday I recited all the Mufassal Suras." On that `Abdullah said, "That is very quick, and we have the (Prophet's) recitation, and I remember very well the recitation of those Suras which the Prophet (ﷺ) used to recite, and they were eighteen Suras from the Mufassal, and two Suras from the Suras that start with Ha Mim
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: 66:67