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." (Using translation from Ibn Mājah 371)
«أَنَّ امْرَأَةً مِنْ أَزْوَاجِ النَّبِيِّ ﷺ اغْتَسَلَتْ مِنْ جَنَابَةٍ فَتَوَضَّأَ النَّبِيُّ ﷺ أَوِ اغْتَسَلَ مِنْ فَضْلِهَا» تَابَعَهُ شُعْبَةُ عَنْ سِمَاكٍ