A unmarriageable kin with whom sexual intercourse would be considered incestuous and a punishable taboo.

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In Islamic sharia legal terminology, a mahram (Arabic محرم, also transliterated mahrim or maharem) is an unmarriageable kin with whom sexual intercourse would be considered incestuous, a punishable taboo. Current usage of the term covers a wider range of people and mostly deals with the dress code practice of hijab.

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