Fasting Before Ghusl After Menstruation Ends: Islamic Ruling
Taken from: Fatāwā Amanpuri by Shaykh Ghulam Mustafa Zaheer Amanpuri
❖ Question:
If a woman’s menstruation has ended but she has not yet performed Ghusl, can she begin fasting before taking the Ghusl?
❖ Answer:
Yes, she may fast, since her menstruation has ended and she has attained purity. However, for Salah and other acts of worship, Ghusl is necessary.