The Examination Exceptions from the Prohibition of Usury

The prohibition of usury is one of the necessaries in Islam based on the koran and narrative references. When the person borrows a money, he have to return it, but if it is returned by addition, so it will be called usury.however there are some expectations about this addition in our  jurisprudence are: between father and his children, between wife and her husband,between slave and the master, between infidels and muslims which is not usury. According to the Koran the usury is oppression and will not accept any expectation, because the religious has implied that clearly and its natural indecent is proved. by scrutinizing in religious texts we find that presumed objects in spite of its looking , would not be counted as usury based on its speciality not  privacy. Thus it must be said that propounded objects as expectations, will have the same indecent intellectual appearance and invalidity defect by keeping the same nature. So the expectations could not be accepted. In this paper we are going to prove the theory of speciality in expectations of usury by using discriptive-analytic method and studying the documents about expectations.