Legal status Mora a as a state within the validity, invalidity and lack of influence

The possibility of transaction of future property is studied in this article. The purpose of doing this paper is studying of the bases of nullity of transaction of future property and designing of the general rule for these transactions, and we were encountered to this question that why the famous of jurists and lawyers knew as nullity transaction of future property, and how much the given arguments are valid and also in what cases it is possible to know truth the transaction of future property under a general rule. The result was that transaction of future property has known as nullity mainly because of some Jurisprudential exemplum (called Revayat in Islamic jurisprudence) and the forbidden of belonging of possession of nonexistent and its uncertainty, while there are also some Jurisprudential exemplum indicating the truth of transaction of future property. Moreover, prompt possession is not the inherent prerequisite of possessive contracts and possession takes place after the emersion of the subject of contract. In addition, transaction of future property is not uncertain and should be known as truth, if there is conjecture of creation of the property in the future according to the normal routine of affairs. Therefore, the existence of subject of contract meanwhile of conclusion is not of the main conditions and general rule and is necessary only in the cases which the mind basis of the parties is on the transaction of existent property.