Sahih Muslim 3737
صحيح مسلم#3737SahihSafiyya bint Abu 'Ubaid reported that she heard Hafsa daughter of Umar (Allah be pleased with them), (and) wife of Allah's Prophet (ﷺ), narrating a hadith like this from Allah's Apostle (ﷺ), and she made this addition:" She should abstain from adorning herself (in case of the death of her husband) for four months and ten 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: 18:82