Quran 2:230 from Surah Al-Baqara on Divine Marvels.
فَإِن طَلَّقَهَا فَلَا تَحِلُّ لَهُۥ مِنۢ بَعۡدُ حَتَّىٰ تَنكِحَ زَوۡجًا غَيۡرَهُۥۗ فَإِن طَلَّقَهَا فَلَا جُنَاحَ عَلَيۡهِمَآ أَن يَتَرَاجَعَآ إِن ظَنَّآ أَن يُقِيمَا حُدُودَ ٱللَّهِۗ وَتِلۡكَ حُدُودُ ٱللَّهِ يُبَيِّنُهَا لِقَوۡمٖ يَعۡلَمُونَ
English translation: Then if he divorces her (finally) then (she is) not lawful for him from after (that) until she marries a spouse other than him Then if he divorces her then no sin on them if they return to each other if they believe that they (will be able to) keep (the) limits (of) Allah And these (are the) limits (of) Allah He makes them clear to a people who know
Transliteration: fa-in tallaqaha fala tahillu lahu min ba'du hatta tankiha zawjan ghayrahu fa-in tallaqaha fala junaha alayhima an yataraja'a in zanna an yuqima hududa al-lahi watil'ka hududu al-lahi yubayyinuha liqawmin ya'lamuna