Sunan an-Nasa'i 390
سنن النسائي#390SahihIt was narrated that Hafsah said:"Umm 'Atiyah would never mention the Messenger of Allah (ﷺ) without saying: 'May my father be ransomed for him.' I said: 'Did you hear the Messenger of Allah (ﷺ) say such and such?' And she said: 'Yes, may my father be ransomed for him.' He said: 'Let the mature girls, virgins staying in seclusion, and menstruating woman go out and witness the good occasions and the supplications of the Muslims, but let the menstruating women keep away from the prayer place
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 3:43