The Prohibition of Approaching Zina
It is not surprising that all the revealed religions (According to the Qur'an there has been only one true, authentic faith, Al-Islam. Islam means the attainment of peace through conscientious and loving submission to the Will and Guidance of Allah. This was the mission of all Prophets and Messengers in human history. It is the same fundamental faith which was revealed to Moses, Jesus, and Muhammad (peace be upon them). The original revelations given to Moses and Jesus are no longer available in their complete, original and unadulterated form. The Qur'an is the only divine revelation which was meticulously preserved in it's complete, original, and unadulterated form. As such, it is to be used as the criterion to judge the authenticity of the present forms of previous revelations.) have prohibited fornication and adultery (zina) and have fought against these crimes against society. Islam, the last of the divinely revealed religions, is very strict in prohibiting zina, for it leads to confusion of lineage, child abuse, the breaking-up of families, bitterness in relationships, the spread of veneral diseases, and a general laxity in morals; moreover, it opens the door to a flood of lusts and self-gratifications. Assuredly, the command of Allah Ta'ala, And do not come near zina; indeed, it is an abomination and an evil way, (17:32), is just and true.
As we know, when Islam prohibits something, it closes all the avenues of approach to it. This is achieved by prohibiting every step and every means leading to the haram. Accordingly, whatever excites passions, opens ways for illicit sexual relations between a man and a woman, and promotes indecency and obscenity, is haram.