Jami` at-Tirmidhi 377
جامع الترمذي#377SahihAishah narrated that:Allah's Messenger said: "The Salat of a women who has reached the age of menstruation is not accepted without a Khimar
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 2:229