Sahih Muslim 3259
صحيح مسلم#3259SahihThis hadith has been narrated on the same authority by Ubaidullah. And in the narration of Abu Bakr (the words are):" More than three (days)." Ibn Numair narrated on the authority of his father, (and the words are):" Three (days) except (when) she has a Mahram with her
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: 15:463