"The Messenger of Allah used to perform ablution with a Mudd (of water) and bath with a Sa'." (Using translation from Ibn Mājah 267)   

كَانَ النَّبِيُّ ﷺ «يَتَوَضَّأُ بِالْمُدِّ وَيَغْتَسِلُ بِالصَّاعِ»  

"I heard Anas bin Malik say: 'The Messenger of Allah ﷺ used to perform Wudu' with a Makkuk (cup) and Ghusl with five Makkuks (cups).'" (Using translation from Nasāʾī 73)   

سَمِعْتُ أَنَسًا يَقُولُ كَانَ رَسُولُ اللَّهِ ﷺ «يَتَوَضَّأُ بِالْمَكُّوكِ وَيَغْتَسِلُ بِخَمْسِ مَكَاكِيكَ»