Sahih Bukhari · Hadith 4250
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) - كتاب المغازى
حدثنا آدم، حدثنا شعبة، عن عبد العزيز بن صهيب، قال سمعت أنس بن مالك رضى الله عنه يقول سبى النبي صلى الله عليه وسلم صفية، فأعتقها وتزوجها. فقال ثابت لأنس ما أصدقها قال أصدقها نفسها فأعتقها.
Narrated `Abdul `Aziz bin Suhaib: Anas bin Malik said, "The Prophet took Safiya as a captive. He manumitted her and married her." Thabit asked Anas, "What did he give her as Mahr (i.e. marriage gift)?" Anas replied. "Her Mahr was herself, for he manumitted her."
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).