Al-Baqarah 2:231

وَإِذَا طَلَّقۡتُمُ ٱلنِّسَآءَ فَبَلَغۡنَ أَجَلَهُنَّ فَأَمۡسِكُوهُنَّ بِمَعۡرُوفٍ أَوۡ سَرِّحُوهُنَّ بِمَعۡرُوفٖۚ وَلَا تُمۡسِكُوهُنَّ ضِرَارٗا لِّتَعۡتَدُواْۚ وَمَن يَفۡعَلۡ ذَٰلِكَ فَقَدۡ ظَلَمَ نَفۡسَهُۥۚ وَلَا تَتَّخِذُوٓاْ ءَايَٰتِ ٱللَّهِ هُزُوٗاۚ وَٱذۡكُرُواْ نِعۡمَتَ ٱللَّهِ عَلَيۡكُمۡ وَمَآ أَنزَلَ عَلَيۡكُم مِّنَ ٱلۡكِتَٰبِ وَٱلۡحِكۡمَةِ يَعِظُكُم بِهِۦۚ وَٱتَّقُواْ ٱللَّهَ وَٱعۡلَمُوٓاْ أَنَّ ٱللَّهَ بِكُلِّ شَيۡءٍ عَلِيمٞ 231

And when you divorce women and they have [nearly] fulfilled their term, either retain them according to acceptable terms or release them according to acceptable terms, and do not keep them, intending harm, to transgress [against them]. And whoever does that has certainly wronged himself. And do not take the verses of Allah in jest. And remember the favor of Allah upon you and what has been revealed to you of the Book and wisdom by which He instructs you. And fear Allah and know that Allah is Knowing of all things