Al Baqarah, 232 Ayah
2:232
وَإِذَا طَلَّقۡتُمُ ٱلنِّسَآءَ فَبَلَغۡنَ أَجَلَهُنَّ فَلَا تَعۡضُلُوهُنَّ أَن يَنكِحۡنَ أَزۡوَٰجَهُنَّ إِذَا تَرَٰضَوۡاْ بَيۡنَهُم بِٱلۡمَعۡرُوفِۗ ذَٰلِكَ يُوعَظُ بِهِۦ مَن كَانَ مِنكُمۡ يُؤۡمِنُ بِٱللَّهِ وَٱلۡيَوۡمِ ٱلۡأٓخِرِۗ ذَٰلِكُمۡ أَزۡكَىٰ لَكُمۡ وَأَطۡهَرُۚ وَٱللَّهُ يَعۡلَمُ وَأَنتُمۡ لَا تَعۡلَمُونَ ٢٣٢
Wa 'Idhā Ţallaqtumu An-Nisā' Fabalaghna 'Ajalahunna Falā Ta`đulūhunna 'An Yankiĥna 'Azwājahunna 'Idhā Tarāđaw Baynahum Bil-Ma`rūfi ۗ Dhālika Yū`ažu Bihi Man Kāna Minkum Yu'uminu Bil-Lahi Wa Al-Yawmi Al-'Ākhiri ۗ Dhālikum 'Azká Lakum Wa 'Aţharu Wa ۗ Allāhu Ya`lamu Wa 'Antum Lā Ta`lamūna
And when you divorce women and they have fulfilled their term, do not prevent them from remarrying their [former] husbands if they agree among themselves on an acceptable basis. That is instructed to whoever of you believes in Allah and the Last Day. That is better for you and purer, and Allah knows and you know not.