Sahih Muslim 319
Sahih Muslim · Book 3: 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
'A'isha reported:
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا لَيْثٌ ، ح وَحَدَّثَنَا ابْنُ رُمْحٍ ، أَخْبَرَنَا اللَّيْثُ ، ح وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، وَأَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ وَعَمْرٌو النَّاقِدُ وَزُهَيْرُ بْنُ حَرْبٍ قَالُوا حَدَّثَنَا سُفْيَانُ ، كِلاَهُمَا عَنِ الزُّهْرِيِّ ، عَنْ عُرْوَةَ ، عَنْ عَائِشَةَ ، قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَغْتَسِلُ فِي الْقَدَحِ وَهُوَ الْفَرَقُ وَكُنْتُ أَغْتَسِلُ أَنَا وَهُوَ فِي الإِنَاءِ الْوَاحِدِ . وَفِي حَدِيثِ سُفْيَانَ مِنْ إِنَاءٍ وَاحِدٍ . قَالَ قُتَيْبَةُ قَالَ سُفْيَانُ وَالْفَرَقُ ثَلاَثَةُ آصُعٍ .
The Messenger of Allah (ﷺ) took a bath from the vessel (which contained seven to eight seers, i. e. fifteen to sixteen pounds) of water And I and he (the Holy Prophet) took a bath from the same vessel. And in the hadith narrated by Sufyan the words are:" from one vessel". Qutaiba said: Al-Faraq is three Sa' (a cubic measuring of varying magnitude).