Sahih Muslim 737
صحيح مسلم#737SahihAnas said:The Apostle of Allah (ﷺ) performed ablution with one Mudd and took bath with a Sa' up to five Mudds
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 3:59