Sahih al-Bukhari 6647
صحيح البخاري#6647SahihNarrated Ibn `Umar:I heard `Umar saying, "Allah's Messenger (ﷺ) said to me, 'Allah forbids you to swear by your fathers." `Umar said, "By Allah! Since I heard that from the Prophet (ﷺ) , I have not taken such an oath, neither intentionally, nor by reporting the oath of someone else
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: 83:26