Sunan at-Tirmithiy كتاب الطلاق واللعان باب ما جاء فى الخلع

حَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ أَنْبَأَنَا الْفَضْلُ بْنُ مُوسَى عَنْ سُفْيَانَ أَنْبَأَنَا مُحَمَّدُ بْنُ عَبْدِ الرَّحْمَنِ وَهُوَ مَوْلَى آلِ طَلْحَةَ عَنْ سُلَيْمَانَ بْنِ يَسَارٍ عَنِ الرُّبَيِّعِ بِنْتِ مُعَوِّذِ بْنِ عَفْرَاءَ أَنَّهَا اخْتَلَعَتْ عَلَى عَهْدِ النَّبِىِّ صلى الله عليه وسلم فَأَمَرَهَا النَّبِىُّ صلى الله عليه وسلم - أَوْ أُمِرَتْ - أَنْ تَعْتَدَّ بِحَيْضَةٍ. قَالَ وَفِى الْبَابِ عَنِ ابْنِ عَبَّاسٍ قَالَ أَبُو عِيسَى حَدِيثُ الرُّبَيِّعِ الصَّحِيحُ أَنَّهَا أُمِرَتْ أَنْ تَعْتَدَّ بِحَيْضَةٍ.
Ar-Rubayyi' Bint-Mu'awwith Ibn-'Afrā' initiated her divorce (1) during the time of the Prophet, peace and blessings of God be upon him, so he ordered her - or she was ordered (2) - to observe one menstruation as a prescribed period. (3). Footnotes: (1): (khul') Divorce at the instance of the wife, who has to give a compensation to her husband. (2): One of the narrators was uncertain whether it was the Prophet, peace and blessings of God be upon him, who ordered her or someone else. Another narration indicates that it was 'Uthmān who ordered her, and that in doing so he was merely following the judgment which the Prophet, peace and blessings of God be upon him, had given in another similar case. (3): The waiting period prescribed by Islamic law for a newly widowed or divorced woman, during which she may not remarry. Click on ḥadīth to read more