It was narrated that 'Aishah said:
"I used to perform Ghusl - the Messenger of Allah (ﷺ) and I - from one vessel. He would compete with me and I would with him until he would say: 'Leave me some' and I would say: 'Leave me some.'" (DE)
English reference (DE): Vol. 1, Book 1, Hadith 240 (DE)
Arabic reference (DE): Book 1, Hadith 241 (DE)