Extramarital Sex: Sexual affairs outside of marriage are prohibited in Islam, and result in severe punishment for the perpetrating husband or wife, upon rigid proof that they participated in an affair. The proof is given by four male witnesses or eight female witnesses (with clean background histories i.e. known to be pious Muslims), who testify to seeing the act of penetration between the extra-marital couple. Punishment for not being able to provide the required number of witnesses after accusing the defendants is eighty lashes of a whip.