5 Preface وَالَّذينَ هُم لِفُروجِهِم حافِظونَYusuf AliWho abstain from sex,1The Muslim must guard himself against ever;' kind of sex abuse or sex perversion. The new psychology associated with the name of Freud traces many of our hidden motives to sex, and it is common knowledge that our refinement or degradation may be measured by the hidden workings of our sex instincts. But even the natural and lawful exercise of sex is restricted to the marriage bond, under which the rights of both parties are duly regulated and maintained.