One of the wives of the Prophet took a bath to cleanse herself from sexual impurity, then the Prophet performed ablution and had a bath with the water left over from her ablution."
أَنَّ امْرَأَةً مِنْ أَزْوَاجِ النَّبِيِّ ﷺ اغْتَسَلَتْ مِنْ جَنَابَةٍ فَتَوَضَّأَ أَوِ اغْتَسَلَ النَّبِيُّ ﷺ مِنْ فَضْلِ وَضُوئِهَا