The Book of Divorce
27/76. Chapter:
Taking The Wife Back
Sunan an-Nasai
أَخْبَرَنَا يُوسُفُ بْنُ عِيسَى، - مَرْوَزِيٌّ - قَالَ حَدَّثَنَا الْفَضْلُ بْنُ مُوسَى، قَالَ حَدَّثَنَا حَنْظَلَةُ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُ طَلَّقَ امْرَأَتَهُ وَهِيَ حَائِضٌ فَأَمَرَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم فَرَاجَعَهَا .
It was narrated from Ibn 'Umar that he divorced his wife when she was menstruating, and the Messenger of Allah told him to take her back.
Reference : Sunan an-Nasa'i 3558In-book reference : Book 27, Hadith 172English translation : Vol. 4, Book 27, Hadith 3588