Sahih al-Bukhari Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) Abdul 'Aziz bin Suhaib عبد العزيز بن صهيب البناني Sahih Anas bin Malik said, “The Prophet (ﷺ) 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.” https://parallelquran.com/hadith/sahih-al-bukhari-4025/