صَحِيحُ مُسْلِمٍ
Sahih Muslim 325 b
The Book of Menstruation
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
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ مِسْعَرٍ، عَنِ ابْنِ جَبْرٍ، عَنْ أَنَسِ، قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم يَتَوَضَّأُ بِالْمُدِّ وَيَغْتَسِلُ بِالصَّاعِ إِلَى خَمْسَةِ أَمْدَادٍ .
Anas said: The Messenger of Allah (ﷺ) performed ablution with one Mudd and took bath with a Sa' up to five Mudds.
Sahih Muslim, 325 bSahihصحيح