Sahih Muslim 608
صحيح مسلم#608SahihJabir reported:The Messenger of Allah (ﷺ) forbade the use of bone or the droppings of camels for wiping (after excretion)
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: 2:75