Sahih al-Bukhari 3519
صحيح البخاري#3519SahihNarrated `Abdullah (bin Mas`ud):The Prophet (ﷺ) said, "Who-ever slaps his face or tears the bosom of his dress, or calls the calls of the Period of Ignorance, is not from us
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: 61:29