They need to see that no result can be attained through explanations made about the Islamic law. The best effort that can be carried out is to verify one's faith and to increase his fear from Allah. Enabling one to become absolutely sure of the existence of Allah and having the verification of that faith settle in his heart and enwrap his soul and heart, then it would be okay. Or else simply saying "this is religiously forbidden and that is religiously lawful" would not have an effect. - Harun Yahya