Surah Al-Mu'minun — Ayah 7 (23:7)
فَمَنِ ٱبۡتَغَىٰ وَرَآءَ ذَٰلِكَ فَأُوْلَٰٓئِكَ هُمُ ٱلۡعَادُونَ ٧
English translation (Saheeh International)
But whoever seeks beyond that, then those are the transgressors -
Brief commentary
So whosoever seeks pleasure from other than his wives and female servants that he possesses, he is transgressing the limits of Allah by delving into that which Allah has forbidden, without keeping to that which He has kept lawful.