Fasting: Does Ghusl by Immersion While Fasting Invalidate the Fast?

Practical Laws of Islam as per the teachings of Imam Khamenei

Fasting: Does Ghusl by Immersion While Fasting Invalidate the Fast?

English:

Question #733:

A fasting person is unaware that he is junub. In the afternoon, he notices and performs ghusl by immersion. Does this invalidate his fast? And if he realizes what he has done only after performing the ghusl, does he have to perform the qaḍā’ of the fast?

Answer #733:

If one performs ghusl by immersion out of forgetfulness (of the fact that he is fasting) or unintentionally, then both his fast and ghusl are valid; thus, he does not have to perform the qaḍā’ of the fast.

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