Sahih al-Bukhari 947
صحيح البخاري#947SahihNarrated Anas bin Malik:Allah's Messenger (ﷺ) offered the Fajr prayer when it was still dark, then he rode and said, 'Allahu Akbar! Khaibar is ruined. When we approach near to a nation, the most unfortunate is the morning of those who have been warned." The people came out into the streets saying, "Muhammad and his army." Allah's Messenger (ﷺ) vanquished them by force and their warriors were killed; the children and women were taken as captives. Safiya was taken by Dihya Al-Kalbi and later she belonged to Allah's Apostle, who married her and her Mahr was her manumission
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: 12:6