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.'" (IT)
English reference (IT): Vol. 1, Book 1, Hadith 251 (IT)
Arabic reference (IT): Book 1, Hadith 252 (IT)