Murtad

Apostasy in Islam (Arabic: ردة‎‎ riddah or ارتداد irtidād) is commonly defined as the conscious abandonment of Islam by a Muslim in word or through deed. It includes the act of converting to another religion by a person who was born in a Muslim family or who had previously accepted Islam. The definition of apostasy from Islam, and whether and how it should be punished are matters of controversy - Islamic scholars differ in their opinions on these questions.

Apostasy in Islam includes within its scope not only the wilful renunciation of Islam by a Muslim through a declaration of renunciation of the Islamic faith (whether for another religion or irreligiosity), or (in the absence of a declaration) by specific deed of undergoing the rites of conversion into another religion, but also even denying, or merely questioning, any "fundamental tenet or creed" of Islam, such as the divinity of God, prophethood of Muhammad, or mocking God, or worshipping one or more idols. Different Muslim denominations and schools of thought may hold different additional views of what each considers a fundamental tenet of the faith. Nevertheless, Muslim jurists from the early period, from different Muslim denominations and schools of thought, developed legal institutions to circumvent harsh punishment in cases of allegations or charges of apostasy. These institutions set the standard for what counts as apostasy from Islam so high that at least prior to the 11th century practically no judgment of apostasy could be passed. Subsequently, authorities in the Muslim World have not consistently applied these high standards of what counts for apostasy.

The term "apostate" has also been applied to people of religions that trace their origins to Islam, such as the Bahá'ís in Iran, even when the modern adherents of said religions may never have actually been Muslims themselves. Apostasy in Islam does not include acts against Islam or conversion to another religion that is involuntary, forced or done as concealment out of fear of persecution or during war (Taqiyya or Kitman).

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