. The obligation to perform a pre-contractual obligation in legal systems, the place of dispute, and in Imamiyah jurisprudence is not stipulated. By virtue of this right, an obligation that, before the due date of a commitment, it is reasonable and reasonable to conclude that the obligated party will not fulfill its contractual obligation at any time for any reason, it has the discretion to undertake to fulfill its obligations before the due date. In this research, using a comparative approach, the legal bases for resorting to this implementation guarantee through an analytical-analytical method in the customary law are examined, while providing the proposed legal principles of law, with the premise of the introduction of rules and rules and issues As a result of this, the preliminaries of rationalization, adherence, and constitution, it can be proved that there is a real violation of the theory of mandatory implementation of early commitment in hypothetical violation in Islamic law, until the basis of this guarantee is enforced in domestic law, consolidated and Strengthened.