حَدَّثَنَا رَوْحٌ حَدَّثَنَا حَنْظَلَةُ سَمِعْتُ سَالِمًا وَسُئِلَ عَنْ رَجُلٍ طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ فَقَالَ لَا يَجُوزُ طَلَّقَ ابْنُ عُمَرَ امْرَأَتَهُ وَهِيَ حَائِضٌ فَأَمَرَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ يُرَاجِعَهَا فَرَاجَعَهَا
مسند امام احمد بن حنبل · Hadith 5272
Hanzalah narrated: I heard Saalim say, when he was asked about a man who divorced his wife when she was menstruating: That is not permissible. Ibn 'Umar divorced his wife when she was menstruating, and the Messenger of Allah (PBUH) instructed him to take her back, so he took her back.
Sanad
حَدَّثَنَا رَوْحٌ حَدَّثَنَا حَنْظَلَةُ سَمِعْتُ سَالِمًا وَسُئِلَ عَنْ رَجُلٍ طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ