{ And those who guard their crotches, except from their wives and what their right hands have possessed, for indeed they are not blamed; but whoever seeks beyond this, those are the transgressors } Al-mu'minum 5-7

Anas ibn Malik related from the Prophet (SAW) who said: There are seven that Allah does not regard on resurrection day and does not vindicate, and does not count among the laborers, and sends them to the fire first among those entering, unless they repent (and whoever turns in repentance, Allah turns to him): someone who has relations [nikah] with his hand, someone who does it and the one who gets it done to him, someone addicted to drink, someone who strikes his parents until they cry out, someone who hurts his neighbors until they curse him, and someone who has relations with his neighbor’s wife.