Zeinab  Al-`Alawani, Instructor of Fiqh and Islamic Studies, Graduate School of Islamic and Social Sciences, states the following: “Intimate relations is a subject that requires a lot of sensitivity and privacy in handling it. The Qur’an has set an ideal example in the use of euphemism and indirect expression when explaining some rules pertaining to intimacy and physical relations. For example, at the expression: “They are a “garment” for you and you are a “garment” for them.” How polite, reserved, and indirect this expression is!!
In that case, any picture showing other people involved in the sexual relationship, even if the private parts are not shown, but they provoke desires and sexual drives, then they are forbidden. Husbands and wives should use other methods to improve their relations or seek knowledge from academic books that provide some illustrations and not actual pictures.”