Muwatta Malik 1251
موطأ مالك#1251SahihYahya related to me from Malik from Nafi that Abdullan ibn Umar said, "The only place a woman whose husband has died and a woman who is absolutely divorced can spend the night is in their houses
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Sahih
In-book reference: 29:48