حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَسَأَلَ عُمَرُ بْنُ الْخَطَّابِ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ ذَلِكَ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مُرْهُ فَلْيُرَاجِعْهَا ثُمَّ يُمْسِكْهَا حَتَّى تَطْهُرَ ثُمَّ تَحِيضَ ثُمَّ تَطْهُرَ ثُمَّ إِنْ شَاءَ أَمْسَكَ بَعْدُ وَإِنْ شَاءَ طَلَّقَ قَبْلَ أَنْ يَمَسَّ فَتِلْكَ الْعِدَّةُ الَّتِي أَمَرَ اللَّهُ أَنْ يُطَلَّقَ لَهَا النِّسَاءُ " .
Yahya related to me from Malik from Nafi that Abdullah ibn Umardivorced his wife while she was menstruating in the time of theMessenger of Allah, may Allah bless him and grant him peace, Umar ibnal-Khattab asked the Messenger of Allah, may Allah bless him and granthim peace, about it. The Messenger of Allah, may Allah bless him andgrant him peace, said, "Go and tell him to take her back and keep heruntil she is purified and then has a period and then is purified. Thenif he wishes, he an keep her, and if he wishes he should divorce herbefore he has intercourse with her. That is the idda which Allah hascommanded for women who are divorced." Translation Not Available
Book Ref: Muwatta Imam Malik Book 29 Hadith 1214
Web Ref: Muwatta Imam Malik Book 29 Hadith 53