A. Islamic faith is to firmly believe that the Holy Prophet Hazrat Mohammed (PBUH) is a true Apostle and his every word and deed is also true. Whoever believes so is a Muslim.
A. One who believes that Islam is the true religion and expresses his intention of embracing Islam with his tongue by reciting the Kalemah – will be considered a Muslim: even if there is no one to make him understand the meaning of the Kalemah or he does not understand it due to some handicap.
A. Such people are called "infidels" (kaafir).
A. An apostate or a renegade is the wretched one who embraces Islam but even then speaks blasphemous words against Islam and is adamant not to renounce his blasphemy.
A. Hypocrites are those who embrace Islam and claim to be Muslims but deny Islam from their heart.
A. Polytheists are those wretched ones who worship different objects except Allah or consider someone or something as partners in Allah's absolute kingdom and power.
A. For example, Hindus who worship idols and consider them partners in Allah's infinite Kingdom and eternal power, Christians, Jews, Parsis, etc., who believe either in duality of God or in trinity. All such people are "Mushriks".
A. God forbid! How can a Muslim be a "Mushrik"? For, he firmly believes in Oneness of the true God i.e. Allah! Contrary to this, a Mushrik is one who considers one or the other human being or thing as a partner of Allah. No Mushrik can be called a Muslim and no Muslim can be described as a Mushrik.
A. Some misguided and disgruntled groups of people have surfaced who call Muslims "polytheists" and "heretics" on one pretext or the other. Muslims must avoid and disassociate themselves from such misguided elements, in order to save their faith.
A. A Muslim should be called a Muslim and an infidel should be called an infidel. There is no valid reason in forbidding one to call an infidel as "Kaafir". Allah Almighty Himself calls infidels as "Kaafir" in the Holy Qur’an i.e. "Qul Yaaa Aieyu-Hal Kaaferoon" (Say you [Mohammed] O' infidels!).