Fasting: Used Najis Water for Ghusl in Ramadan — Are Fasts and Prayers Valid?

Practical Laws of Islam as per the teachings of Imam Khamenei

Fasting: Used Najis Water for Ghusl in Ramadan — Are Fasts and Prayers Valid?

English:

Question #776:

A person uses najis water to perform ghusl during the month of Ramadan. A week later, he remembers that the water was najis. What is the ruling concerning his prayers and fasts during that period?

Answer #776:

His prayers are void and he is liable to their qaḍā’, but his fasts are valid.

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