"The Prophet would perform Wudu with a Mudd, and he would perform Ghusl with a Sa."  

أَنَّ النَّبِيَّ ﷺ كَانَ يَتَوَضَّأُ بِالْمُدِّ وَيَغْتَسِلُ بِالصَّاعِ قَالَ وَفِي الْبَابِ عَنْ عَائِشَةَ وَجَابِرٍ وَأَنَسِ بْنِ مَالِكٍ