Sahih al-Bukhari 7401
صحيح البخاري#7401SahihNarrated Ibn `Umar:The Prophet (ﷺ) said, "Do not swear by your fathers; and whoever wants to swear should swear by Allah
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: 97:30