Sahih al-Bukhari 4605
صحيح البخاري#4605SahihNarrated Al-Bara:The last Sura that was revealed was Bara'a, and the last Verse that was revealed was: "They ask you for a legal verdict, Say: Allah directs (thus) about those who leave no descendants or ascendants as heirs
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: 65:127