Purity: Are People of the Book Who Acknowledge the Prophet (s) but Follow Ancestral Practices Considered Non-Muslims in Terms of Purity?

Practical Laws of Islam as per the teachings of Imam Khamenei

Purity: Are People of the Book Who Acknowledge the Prophet (s) but Follow Ancestral Practices Considered Non-Muslims in Terms of Purity?

English:

Question #313:

Are the People of the Book, who accept the Prophethood of the Seal of the Prophets (s.) but follow the practice of their ancestors in matters of worship, considered non-Muslims as far as of the rules of purity are concerned?

Answer #313:

Solely having faith in the Prophethood of the Seal of the prophets (s.) is not sufficient for considering someone Muslim. However, such persons are considered pure if they belong to The People of the Book.

-Imam Khamenei, Practical Laws of Islam, Rules of Non-Muslims