Ady bin Thabit al-Ansari عدي بن ثابت الأنصاري الكوفي · The Book on Purification

the Prophet said about the Mustahadah that she should: "Leave the Salat for the days of her period which she menstruates in, then perform Ghusl, and perform Wudu for every Salat, and observe Saum and perform Salat."