Sahih al-Bukhari 2818
صحيح البخاري#2818SahihNarrated `Abdullah bin Abi `Aufa:Allah's Messenger (ﷺ) said, "Know that Paradise is under the shades of swords
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: 56:34