فَإِن طَلَّقَهَا فَلَا تَحِلُّ لَهُۥ مِنۢ بَعْدُ حَتَّىٰ تَنكِحَ زَوْجًا غَيْرَهُۥ ۗ فَإِن طَلَّقَهَا فَلَا جُنَاحَ عَلَيْهِمَآ أَن يَتَرَاجَعَآ إِن ظَنَّآ أَن يُقِيمَا حُدُودَ ٱللَّهِ ۗ وَتِلْكَ حُدُودُ ٱللَّهِ يُبَيِّنُهَا لِقَوْمٍ يَعْلَمُونَ
Fain t allaqah a fal a ta h illu lahu min baAAdu h att a tanki h a zawjan ghayrahu fain t allaqah a fal a jun ah a AAalayhim a an yatar a jaAA a in th ann a an yuqeem a h udooda All a hi watilka h udoodu All a hi yubayyinuh a liqawmin yaAAlamoon a And if he divorces her [finally], she shall thereafter not be lawful unto him unless she first takes another man for husband; then, if the latter divorces her, there shall be no sin upon either of the two if they return to one another - provided that both of them think that they will be able to keep within the bounds set by God: for these are the bounds of God which He makes clear unto people of [innate] knowledge.
 - Mohammad Asad
So if a husband divorces his wife three times, it is not lawful for him to remarry her until after she has married another man and gotten divorced. In that case there is no blame on either of them if they reunite in marriage, provided they think that they can keep the limits of Allah. Such are the limits of Allah which He makes clear to the people of understanding.
 - Muhammad Farooq-i-Azam Malik
So if a husband divorces his wife 'three times', then it is not lawful for him to remarry her until after she has married another man and then is divorced. Then it is permissible for them to reunite, as long as they feel they are able to maintain the limits of Allah. These are the limits set by Allah, which He makes clear for people of knowledge.
 - Mustafa Khattab
And if he hath divorced her (the third time), then she is not lawful unto him thereafter until she hath wedded another husband. Then if he (the other husband) divorce her it is no sin for both of them that they come together again if they consider that they are able to observe the limits of Allah. These are the limits of Allah. He manifesteth them for people who have knowledge.
 - Marmaduke Pickthall
So if a husband divorces his wife (irrevocably) he cannot after that remarry her until after she has married another husband and he has divorced her. In that case there is no blame on either of them if they reunite provided they feel that they can keep the limits ordained by Allah. Such are the limits ordained by Allah which He makes plain to those who understand. 260
 - Abdullah Yusuf Ali