[Machine] His sister was under a man, then he divorced her and kept away from her until her waiting period expired. Then he approached to propose to her, but a fortification prevented him from it, and he said, "He kept away from her while he was able to marry her." So, something happened between him and her, and Allah revealed (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) [Quran 2:232].
كَانَتْ أُخْتُهُ تَحْتَ رَجُلٍ فَطَلَّقَهَا ثُمَّ خَلَّى عَنْهَا حَتَّى انْقَضَتْ عِدَّتُهَا ثُمَّ قَرَّبَ يَخْطُبُهَا فَحَمِيَ مَعْقِلٌ مِنْ ذَلِكَ وَقَالَ خَلَّى عَنْهَا وَهُوَ يَقْدِرُ عَلَيْهَا فَحَالَ بَيْنَهُ وَبَيْنَهَا فَأَنْزَلَ اللَّهُ {وَإِذَا طَلَّقْتُمِ النِّسَاءَ فَبَلَغْنَ أَجَلَهُنَّ فَلَا تَعْضُلُوهُنَّ أَنْ يَنْكِحْنَ أَزْوَاجَهُنَّ إِذَا تَرَاضَوْا بَيْنَهُمْ بِالْمَعْرُوفِ}