Fasting: Invalidated Fast Due to Ignorance — Qadā’, Kaffārah, or Both?

Practical Laws of Islam as per the teachings of Imam Khamenei

Fasting: Invalidated Fast Due to Ignorance — Qadā’, Kaffārah, or Both?

English:

Question #813:

Due to ignorance of the rules, a person does something that invalidates his fast, should he only perform qaḍā’ of the fasting or should he pay the kaffārah as well?

Answer #813:

If someone does something that invalidates his fast due to lack of knowledge about the shar‘ī rule, e.g., he does not know that taking medicine like taking food invalidates fasting and takes medicine in Ramadan month during the day, his fasting is void. He should perform its qaḍā’ but paying kaffārah is not required.

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