حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ مَوْلَى آلِ طَلْحَةَ عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ عَنِ ابْنِ عُمَرَ أَنَّهُ طَلَّقَ امْرَأَتَهُ فِي الْحَيْضِ فَذَكَرَ ذَلِكَ عُمَرُ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ مُرْهُ فَلْيُرَاجِعْهَا ثُمَّ لِيُطَلِّقْهَا وَهِيَ طَاهِرٌ أَوْ حَامِلٌ
مسند امام احمد بن حنبل · Hadith 5228
It was narrated from Ibn Umar that he divorced his wife when she was menstruating. Umar mentioned that to the Prophet (PBUH) who said: "Tell him to take her back, then divorce her when she is pure or pregnant.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020