أَخْبَرَنَا خَالِدُ بْنُ مَخْلَدٍ ، حَدَّثَنَا مَالِكٌ ، عَنْ نَافِعٍ ، عَنِ ابْنِ عُمَرَ : أَنَّهُ طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ، فَذَكَرَ ذَلِكَ عُمَرُ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، فَقَالَ :" مُرْهُ أَنْ يُرَاجِعَهَا وَيُمْسِكَهَا حَتَّى تَطْهُرَ، ثُمَّ تَحِيضُ، ثُمَّ تَطْهُرُ، ثُمَّ إِنْ شَاءَ، أَمْسَكَ، وَإِنْ شَاءَ طَلَّقَ قَبْلَ أَنْ يَمَسَّ، فَتِلْكَ الْعِدَّةُ الَّتِي أَمَرَ اللَّهُ أَنْ يُطَلَّقَ لَهَا النِّسَاءُ "

Khalid bin Mukhlid told us, Malik told us, on the authority of Nafi’, on the authority of Ibn Umar: He divorced his wife while she was menstruating, so Umar mentioned that. To the Prophet, may God bless him and grant him peace, and he said: “Tell him to take her back and keep her until she is pure, then she will menstruate, then she will be pure, then if he wishes, he may keep her. And if he wishes, he may be divorced before he touches her, that is the waiting period for which God has commanded that women be divorced.”