Ibn ‘Umar said that he divorced his wife while she was menstruating. ‘Umar mentioned the matter to the Prophetﷺ. He (the Prophet) said “Order him, he must take her back and divorce her when she is purified (from menstrual discharge) or she is pregnant.”

حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ، مَوْلَى آلِ طَلْحَةَ عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُ طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ فَذَكَرَ ذَلِكَ عُمَرُ لِلنَّبِيِّ ﷺ فَقَالَ رَسُولُ اللَّهِ ﷺ
" مُرْهُ فَلْيُرَاجِعْهَا ثُمَّ لْيُطَلِّقْهَا إِذَا طَهُرَتْ أَوْ وَهِيَ حَامِلٌ " .