"What did you think about a man who divorces his wife when she is menstruating?" He said to him: "Abdullah bin 'Umar divorced his wife when she was menstruating during the time of the Messenger of Allah. 'Umar asked the Messenger of Allah (about that) and said: 'Abdullah bin 'Umar has divorced his wife while she was menstruating.' The Messenger of Allah said: 'Let him take her back.' So he made me take her back. He said: 'When she becomes pure, let him divorce her or keep her.' Ibn 'Umar said: 'The Prophet said: 'O Prophet! When you divorce women, divorce them before their 'Iddah (prescribed period) elapses.'" (Using translation from Nasāʾī 3392)
يَسْمَعُ فَقَالَ كَيْفَ تَرَى فِي رَجُلٍ طَلَّقَ امْرَأَتَهُ حَائِضًا؟ فَقَالَ إِنَّ ابْنَ عُمَرَ طَلَّقَ امْرَأَتَهُ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ فَقَالَ عُمَرُ يَا رَسُولَ اللهِ إِنَّ عَبْدَ اللهِ طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ فَقَالَ النَّبِيُّ ﷺ لِيُرَاجِعْهَا عَلَيَّ وَلَمْ يَرَهَا شَيْئًا وَقَالَ فَرَدَّهَا إِذَا طَهُرَتْ فَلْيُطَلِّقْ أَوْ يُمْسِكْ قَالَ ابْنُ عُمَرَ وَقَرَأَ النَّبِيُّ ﷺ {يَا أَيُّهَا النَّبِيُّ إِذَا طَلَّقْتُمُ النِّسَاءَ فَطَلِّقُوهُنَّ} [الطلاق 1] فِي قُبُلِ عِدَّتِهِنَّ قَالَ ابْنُ جُرَيْجٍ وَسَمِعْتُ مُجَاهِدًا يَقْرَؤُهَا كَذَلِكَ