عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Purpose of the principle binding or incidental is such that make contracts be not unstable and without fixity and together parties not possible of power to resciccion them. But purpose of the voidable contract is this that parties have right's of disturb contract. The principle binding is one of the benefit and utilities basic that include to fegheh. This principle use in essay different fegheh and law and interpretation contracts. For instance: verification use in this principle binding, if the make contract and not express legislator to binding and voidable. There is doubt that do make contract is binding or voidable? First of all principle is binding contract? Or tell to answers and questions none of the parties without exist cause of resciccion, parties have not disturb decide to make contract. Because, factor and potential causes not achieved unless by the elements relative it. Do the swap contract and gratuitous contract is one base principle binding or voidable? What’s the philosophy determent doing's right toward binding or voidable? This deposition and inscription pursuit find and discover answer for the questions to be such.