Is there a classification in Islam whereby a person can be classified as a “KAFIR non believer. Can a Muslim call another Muslim a KAFIR ?
Allah tells us in the Qur’an: “O ye who believe! When you go abroad in the cause of God, investigate carefully, and say not to anyone who offers you a solution; “Thou art none of a believer !”. (IV : 94) The instruction here is very clear. If a person gives us any clear hint that he is a Muslim, as is the case with a person who starts by accosting us with the well known Islamic greeting of “peace be on you” then we must not deny him his rights as a Muslim. Unless we are absolutely certain that he is not. Hence, if a person goes beyond giving us the Islamic greeting to making the declaration that he believes in the oneness of Allah and in the message of the Prophet, then he cannot be classified as a non-believer without a clear proof of that fact. Indeed, Islam considers it a grave sin for a person to call a Muslim a Kafir, the seriousness of the accusation is provided by the Prophets pronouncement, “If a man calls another a Kafir the description certainly applies to one of them”. This
