وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ مَوْلاَةٍ، لِصَفِيَّةَ بِنْتِ أَبِي عُبَيْدٍ ‏.‏ أَنَّهَا اخْتَلَعَتْ مِنْ زَوْجِهَا بِكُلِّ شَىْءٍ لَهَا فَلَمْ يُنْكِرْ ذَلِكَ عَبْدُ اللَّهِ بْنُ عُمَرَ ‏.‏ قَالَ مَالِكٌ فِي الْمُفْتَدِيَةِ الَّتِي تَفْتَدِي مِنْ زَوْجِهَا أَنَّهُ إِذَا عُلِمَ أَنَّ زَوْجَهَا أَضَرَّ بِهَا وَضَيَّقَ عَلَيْهَا وَعُلِمَ أَنَّهُ ظَالِمٌ لَهَا مَضَى الطَّلاَقُ وَرَدَّ عَلَيْهَا مَالَهَا ‏.‏ قَالَ فَهَذَا الَّذِي كُنْتُ أَسْمَعُ وَالَّذِي عَلَيْهِ أَمْرُ النَّاسِ عِنْدَنَا ‏.‏ قَالَ مَالِكٌ لاَ بَأْسَ بِأَنْ تَفْتَدِيَ الْمَرْأَةُ مِنْ زَوْجِهَا بِأَكْثَرَ مِمَّا أَعْطَاهَا ‏.‏

Yahya related to me from Malik from Nafi from a mawla of Safiyyabint Abi Ubayd that she gave all that she possessed to her husband ascompensation for her divorce from him, and Abdullah ibn Umar did notdisapprove of that. Malik said that divorce was ratified fora woman who ransomed herself from her husband, when it was known thather husband was detrimental to her and was oppressive for her, and itwas known that he wronged her, and he had to return her property toher. Malik added, "This is what I have heard, and it is what is doneamong us." Malik said, "There is no harm if a woman ransomsherself from her husband for more than he gave her." Translation Not Available

Book Ref: Muwatta Imam Malik Book 29 Hadith 1188
Web Ref:  Muwatta Imam Malik Book 29 Hadith 32