(13) باب الْقَدْرِ الَّذِي يَكْتَفِي بِهِ الإِنْسَانُ مِنَ الْمَاءِ لِلْوُضُوءِ وَالْغُسْلِ
It was narrated that 'Aishah said:
"The Messenger of Allah (ﷺ) used to perform Ghusl with a Mudd and Ghusl with a Sa'."
Reference: Sunan an-Nasa'i 347
In-book reference: Book 2, Hadith 23
English translation: Vol. 1, Book 2, Hadith 348