Sahih Muslim 6535
صحيح مسلم#6535SahihAbu Huraira reported Allah's Messenger (ﷺ) as saying:There should be no estranged relations beyond three days
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: 45:34