´It was narrated that Musa Al-Juhani said:` "A vessel was brought to Mujahid, which I estimated to be eight Ratls, and he said: 'Aishah told me that the Messenger of Allah (ﷺ) used to perform Ghusl using such a vessel.'"
Hadith ReferenceSunan an-Nasa'i / Mention When Ghusal (A Purifying Bath) Is Obligatory And When It Is Not / Hadith: 227
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده صحيح