It was narrated that Jubair bin Mut'im said:
"They argued about Ghusl in the presence of the messenger of Allah (ﷺ). One of the people said: 'I perform Ghusl in such-and-such a manner.' The Messenger of Allah (ﷺ) said: 'As for me, I pour three handfuls of water over my head.'"
English reference: Vol. 1, Book 1, Hadith 251
Arabic reference: Book 1, Hadith 252