The Book of Menstruation
3/10. Chapter:
The amount of water with which it is recommended to perform ghusl in the case of janabah; a man and woman washing from a single vessel; one of them washing with the left-over water of the other
Sahih Muslim
وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، وَأَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ جَمِيعًا عَنِ ابْنِ عُيَيْنَةَ، قَالَ قُتَيْبَةُ حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ أَبِي الشَّعْثَاءِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ أَخْبَرَتْنِي مَيْمُونَةُ، أَنَّهَا كَانَتْ تَغْتَسِلُ هِيَ وَالنَّبِيُّ صلى الله عليه وسلم فِي إِنَاءٍ وَاحِدٍ .
Ibn Abbas said: Maimuna (the wife of the Holy Prophet) reported to me that she and the Messenger of Allah (ﷺ) took a bath from one vessel.
Reference : Sahih Muslim 322In-book reference : Book 3, Hadith 55USC-MSA web (English) reference : Book 3, Hadith 631