﴿ ٱلطَّلَٰقُ مَرَّتَانِ ۖ فَإِمْسَاكٌۢ بِمَعْرُوفٍ أَوْ تَسْرِيحٌۢ بِإِحْسَٰنٍۢ ۗ وَلَا يَحِلُّ لَكُمْ أَن تَأْخُذُوا۟ مِمَّآ ءَاتَيْتُمُوهُنَّ شَيْـًٔا إِلَّآ أَن يَخَافَآ أَلَّا يُقِيمَا حُدُودَ ٱللَّهِ ۖ فَإِنْ خِفْتُمْ أَلَّا يُقِيمَا حُدُودَ ٱللَّهِ فَلَا جُنَاحَ عَلَيْهِمَا فِيمَا ٱفْتَدَتْ بِهِۦ ۗ تِلْكَ حُدُودُ ٱللَّهِ فَلَا تَعْتَدُوهَا ۚ وَمَن يَتَعَدَّ حُدُودَ ٱللَّهِ فَأُو۟لَٰٓئِكَ هُمُ ٱلظَّٰلِمُونَ ﴾

“A divorce may be [revoked] twice, whereupon the marriage must either be resumed in fairness or dissolved in a goodly manner. And it is not lawful for you to take back anything of what you have ever given to your wives unless both [partners] have cause to fear that they may not be able to keep within the bounds set by God: hence, if you have cause to fear that the two may not be able to keep within the bounds set by God, there shall be no sin upon either of them for what the wife may give up [to her husband] in order to free herself. These are the bounds set by God; do not, then, transgress them: for they who transgress the bounds set by God-it is they, they who are evildoers!”

Please check ayah 2:230 for complete tafsir.