Sahih al-Bukhari 1383
صحيح البخاري#1383SahihNarrated Ibn `Abbas:Allah's Messenger (ﷺ) was asked about the children of (Mushrikeen) pagans. The Prophet (ﷺ) replied, "Since Allah created them, He knows what sort of deeds they would have done
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: 23:135