Abstract
In the jurisprudence is well known that each of the parties to the contract should have the competence and capacity to conclusion the contract in time of creating by another and between the two creations. According to jurisprudence they must have the addressing capacity. that means since creating offer , each party should maintain their competence until completion of the contract and connect acceptance to offer ; and death , madness , mental incapacity , bankruptcy , stupor , sleeping or drunk on them shouldn’t occur. There are many differences of opinion among the jurisconsults in this field. In Iran law also legislature has remained silent and hasn’t express anything about it. Thus, the field is open for making comments and needs jurists to provide solutions after examine juridical basics and principles. However, it seems that having intact creation will, in time of creating by creator is enough and that Convincing evidence about existence and continuity of it to the end of the contract can’t be seen.
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