Is a person who utters the Two Testimonies, yet remains ignorant of the unlawfulness of something whose unlawfulness is known by necessity, and who used to consider it lawful before uttering them, considered an inward Muslim?

If a person embraces Islam while being ignorant of some prohibitions, and then pronounces the two testimonies of faith, remaining ignorant of the unlawfulness of some matters for a period, he is considered a Muslim. He must then be taught what he was ignorant of regarding its prohibition. However, whoever denies the unlawfulness of what is known to be an essential part of the religion, such as prayer, zakat, fasting, and Hajj, is considered a disbeliever if he grew up among Muslims and scholars. As for one who grew up in a desert far from knowledge, or who is new to Islam and is ignorant of some clear rulings, he is not judged to be a disbeliever until he is taught what the Messenger brought.