But when a person strives to demolish the religion and to make youngsters kafir (disbeliever), or if he, saying “good” about one of the harams , tries to make it popular so that everybody commits it, or if he says that one of Allahu ta’ala’s commands is retrogressive and harmful, he is called “kafir”. Even if he says that he is a Muslim, performs namaz (ritual prayer) and goes on a hajj (pilgrimage), he is still called a Zindiq . It would be stupidity to regard such hypocritical people, who deceive Muslims, as Muslims.
Allahu ta’ala in the twenty-eighth ayat  of Surat-ut-Tawba of the Qur’an al-kerim says, “Najas and rijs,” that is, “foul,” about disbelievers. Then, disbelief should be foul and base in the eyes of Muslims. Allahu ta’ala declares in the fourteenth ayat of Surat-ur Ra’d and in the fiftieth ayat of surat-ul Mu’min, “The prayers of these enemies are without a result. There is no possibility of them being accepted.”
Allahu ta’ala and His Prophet are pleased with Muslims. There cannot be a greater blessing than attaining Allah’s grace and love.
 haram: an action, word or thought prohibited by Allahu ta’ala.
 zindiq: an enemy of Islam who pretends to be a Muslim.