Al-Baqarah - 2:229

الطَّلاَقُ مَرَّتَانِ فَإِمْسَاكٌ بِمَعْرُوفٍ أَوْ تَسْرِيحٌ بِإِحْسَانٍ وَلاَ يَحِلُّ لَكُمْ أَن تَأْخُذُواْ مِمَّا آتَيْتُمُوهُنَّ شَيْئًا إِلاَّ أَن يَخَافَا أَلاَّ يُقِيمَا حُدُودَ اللّهِ فَإِنْ خِفْتُمْ أَلاَّ يُقِيمَا حُدُودَ اللّهِ فَلاَ جُنَاحَ عَلَيْهِمَا فِيمَا افْتَدَتْ بِهِ تِلْكَ حُدُودُ اللّهِ فَلاَ تَعْتَدُوهَا وَمَن يَتَعَدَّ حُدُودَ اللّهِ فَأُوْلَـئِكَ هُمُ الظَّالِمُونَ
[2:229]
Divorce may be (pronounced) twice, then keep (them) in good fellowship or let (them) go with kindness; and it is not lawful for you to take any part of what you have given them, unless both fear that they cannot keep within the limits of Allah; then if you fear that they cannot keep within the limits of Allah, there is no blame on them for what she gives up to become free thereby. These are the limits of Allah, so do not exceed them and whoever exceeds the limits of Allah these it is that are the unjust.
A divorce is only permissible twice: after that, the parties should either hold Together on equitable terms, or separate with kindness. It is not lawful for you, (Men), to take back any of your gifts (from your wives), except when both parties fear that they would be unable to keep the limits ordained by Allah. If ye (judges) do indeed fear that they would be unable to keep the limits ordained by Allah, there is no blame on either of them if she give something for her freedom. These are the limits ordained by Allah; so do not transgress them if any do transgress the limits ordained by Allah, such persons wrong (Themselves as well as others).
Divorce must be pronounced twice and then (a woman) must be retained in honour or released in kindness. And it is not lawful for you that ye take from women aught of that which ye have given them; except (in the case) when both fear that they may not be able to keep within the limits (imposed by) Allah. And if ye fear that they may not be able to keep the limits of Allah, in that case it is no sin for either of them if the woman ransom herself. These are the limits (imposed by) Allah. Transgress them not. For whoso transgresseth Allah's limits: such are wrong-doers.