Questions on the Explanation of the Book of Nullifiers of Islam

Question:
If a person mocks something of the religion of Allah, is he required to say the two testimonies of faith? Because the Messenger of Allah (peace and blessings be upon him) ordered the one who swore by other than Allah to say them. Or is mere repentance sufficient?

Answer:
Yes, if he is ruled to have committed apostasy, then he must utter the two testimonies of faith. And if he denied something of the matters of the religion, he must acknowledge what he denied along with the testimonies. The two testimonies of faith are required for entering Islam and for repenting from apostasy. The two testimonies of faith are required.