Sahih al-Bukhari 812
صحيح البخاري#812SahihNarrated Ibn `Abbas:The Prophet (ﷺ) said, "I have been ordered to prostrate on seven bones i.e. on the forehead along with the tip of the nose and the Prophet (ﷺ) pointed towards his nose, both hands, both knees and the toes of both feet and not to gather the clothes or the hair
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: 10:207