Sex

Tell believing men to lower their gaze and guard their modesty, that is purer for them.

24:30Tell the believing men to lower their gaze and be modest. That is purer for them. Lo! Allah is aware of what they do.

And those who guard their chastity

70:29And those who preserve their chastity

Except with their spouses or those their right hand possesses, for then they are not blameworthy.

70:30Save with their wives and those whom their right hands possess, for thus they are not blameworthy;

Marry off the single among you and the righteous among your servants. If they are poor, Allah will enrich them from His bounty.

24:32And marry such of you as are solitary and the pious of your slaves and maid-servants. If they be poor, Allah will enrich them of His bounty. Allah is of ample means, Aware.

Those who do not invoke other gods besides Allah, nor take a life unjustly, nor commit adultery.

25:68And those who cry not unto any other god along with Allah, nor take the life which Allah hath forbidden save in (course of) justice, nor commit adultery - and whoso doeth this shall pay the penalty;

Do not approach adultery; it is an outrage and an evil path.

17:32And come not near unto adultery. Lo! it is an abomination and an evil way.

As for those women among you who commit a grave indecency, call upon four witnesses from among yourselves to testify against them. If they bear witness, then confine those women to their homes until death claims them or Allah opens for them a path forward.

4:15As for those of your women who are guilty of lewdness, call to witness four of you against them. And if they testify (to the truth of the allegation) then confine them to the houses until death take them or (until) Allah appoint for them a way (through new legislation).

As for those who commit adultery, punish them unless they repent and reform. If they do, leave them be.

4:16And as for the two of you who are guilty thereof, punish them both. And if they repent and improve, then let them be. Lo! Allah is ever relenting, Merciful.

Repentance is accepted by Allah from those who sin out of ignorance and then quickly turn back. Allah forgives them.

4:118Whom Allah cursed, and he said: Surely I will take of Thy bondmen an appointed portion,