Sahih al-Bukhari 962
صحيح البخاري#962SahihNarrated Ibn `Abbas:I offered the `Id prayer with Allah's Messenger (ﷺ), Abu Bakr, `Umar and `Uthman and all of them offered the prayer before delivering the Khutba
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: 13:11