فَمَنِ ابْتَغَىٰ وَرَاءَ ذَٰلِكَ فَأُولَـٰئِكَ هُمُ الْعَادُونَ (However, those who seek (sexual pleasure) beyond that are the transgressors - Al-Mu'minun 23:7 ⧉) . Satisfying one's desire with someone other than one's own wife or a lawfully acquired slave-girl is strictly forbidden and the ban includes adultery (marrying a woman whom one is not allowed to marry under the religious code is also adultery), having sex with one's wife or slave-girl when she is menstruating or is confined, or having unnatural sex with them, homosexuality and bestiality, while most jurists include masturbation also in the ban. (Tafsir Bayan ul-Qur’ an, Qurtubi, al-Bahr ul-Muhit, etc.)