Sahih al-Bukhari 5086
Book 67: Wedlock, Marriage (Nikaah) · Narrated by Anas bin Malik
Arabic
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ، وَشُعَيْبِ بْنِ الْحَبْحَابِ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم أَعْتَقَ صَفِيَّةَ، وَجَعَلَ عِتْقَهَا صَدَاقَهَا.
English translation
Narrated Anas bin Malik:Allah's Messenger (ﷺ) manumitted Safiyya and regarded her manumission as her Mahr
Reference: Sahih al-Bukhari 5086, Book of Wedlock, Marriage (Nikaah). English translation by Dr. Muhammad Muhsin Khan.