Sahih Muslim 2569
صحيح مسلم#2569SahihAbu Huraira reported that the Messenger of Allah (ﷺ) forbade (his Companions) to observe Saum Wisal
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: 13:75