Sale of an immovable property is an act of contract between the parties. Each party to the contract has definite duties to perform; the vendor has to establish his title to the property, handover the title deeds and vacant possession of the property at the time of registration. The purchaser has to pay the consideration as agreed, attend the registration office and help in completion of registration formalities. The vacant possession of the property is handed over to the purchaser at the time of registration. But in certain cases, the vendor hands over the vacant possession of the property to the purchaser, pending registration of sale deed. This is called part performance.