“I am indeed a trustworthy messenger to you.”

“So fear Allah and obey me.”

Thus, he commanded them to fear Allah, which entails repenting of this indecency. If the address is directed specifically to the active participant, this is only because he is ordinarily the one who feels desire and seeks the act, unlike the receptive participant. The latter was not originally created with a desire for this, although such desire may arise because of an illness that develops, payment he receives from the active participant, or some other purpose.

And Allah, glorified and exalted is He, knows best.