فَإِن طَلَّقَهَا فَلَا تَحِلُّ لَهُۥ مِن بَعۡدُ حَتَّىٰ تَنكِحَ زَوۡجًا غَيۡرَهُۥ ۗ فَإِن طَلَّقَهَا فَلَا جُنَاحَ عَلَيۡهِمَآ أَن يَتَرَاجَعَآ إِن ظَنَّآ أَن يُقِيمَا حُدُودَ ٱللَّهِ ۗ وَتِلۡكَ حُدُودُ ٱللَّهِ يُبَيِّنُهَا لِقَوۡمٍ يَعۡلَمُونَ
So if a husband divorces his wife (irrevocably), He cannot, after that, re-marry 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 re-unite, 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.<br/>
If he, the husband, divorces her, after the two utterances [of divorce]; she shall not be lawful to him after that, after the third [utterance of] divorce, until she marries another husband, who has sexual intercourse with her, as reported by the two Shaykhs [Bukhaaree and Muslim]. If he, the second husband, divorces her, then neither of them would be at fault, that is, the woman and her first husband, to return to each other, in wedlock, after the completion of the waiting period, if they think that they will maintain God's bounds. Those, matters mentioned, are God's bounds, which He makes clear to a people who have knowledge, [a people who] reflect.