[Machine] Aisha, the wife of the Prophet Muhammad ﷺ , said: "The Messenger of Allah ﷺ used to perform ritual purification (ghusl) with one sa' (a unit of volume) of water, and perform ablution (wudu) with one mudd (another unit of volume) of water."
عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ قَالَتْ كَانَ رَسُولُ اللهِ ﷺ يَغْتَسِلُ بِالصَّاعِ مِنَ الْمَاءِ وَيَتَوَضَّأُ بِالْمُدِّ