Fasting: Does Menstruation Before Maghrib Invalidate the Fast?

Practical Laws of Islam as per the teachings of Imam Khamenei

Fasting: Does Menstruation Before Maghrib Invalidate the Fast?

English:

Question #736:

If a woman’s periods begin two hours or more before the maghrib prayers in the month of Ramadan, will her fast be null and void for that day?

Answer #736:

Her fast is void.

-Imam Khamenei, Practical Laws of Islam, Importance and Conditions of Fasting