I would suggest few linke to follow in order to acquire an idea about the differences between the prostitution and the temporay marriage:
http://www.al-islam.org/encyclopedia/...
http://home.swipnet.se/islam/...
Some call this type of marriage which enjoys most of the permanent marriage's terms and conditions, they call it Legalised Prostitution! I would advise them to take a look in the prostitution's terms and governing laws (since they might know about it better) and make a comparison. Making a statement is free Now but we will be charged on it Later!
دوست عزیز، به زیگ زاگ خوش آمدید. لطفاً نظرهای خود را طبق قوانین وب سایت به فارسی بنویسید.
با تشکر، ویراستار