Grounds For Prohibition Of Zina
I am not asking for why sex with slaves is allowed.. that is a different topic. All I am saying is .. sex with slaves is sex outside marriage. So, if sex outside marriage were really inherently immoral, sex with slaves wouldn’t be allowed by the so-called creator of the universe and creator of the morality .
Here Islam means since the beginning of conscious Humans, right from Adam and Eve, they were wed-locked right from the beginning and hence the initiation of institution of Family. But in the absence of rationale behind the need for institution of family, it’s only rational that free sexual relationship would’ve been the scheme of God.
Adam and Eve started their family generations with the use of incest . So, that can’t be used as a basic moral construct.