Sahih al-Bukhari 4765
صحيح البخاري#4765SahihNarrated Sa`id bin Jubair:Ibn Abza said to me, "Ask Ibn `Abbas regarding the Statement of Allah: 'And whoever murders a believer intentionally, his recompense is Hell.' (4.69) And also His Statement: '...nor kill such life as Allah has forbidden, except for a just cause .....except those who repent, believe, and do good deeds.' " (25.68-70) So I asked Ibn `Abbas and he said, "When this (25.68-69) was revealed, the people of Mecca said, "We have invoked other gods with Allah, and we have murdered such lives which Allah has made sacred, and we have committed illegal sexual intercourse. So Allah revealed: 'Except those who repent, believe, and do good deeds and Allah is Oft-Forgiving, Most Merciful
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: 65:287