Fulfilling the obligations arising from contracts is one of the significant issues in the law of contracts. If each of the parties of the contract or one of them refuses to fulfill his/her contractual obligations. there are various solutions predicted in different legal systems in this regard. In Iranian law. https://www.roneverhart.com/Pitkin-Ave-east-toward-Stone-Avenue-Brownsville-Mother-Gaston-Blvd-1964/