DEED OF AGREEMENT

If a person made a Deed of Agreement for sale of his property having valuation of Rs.600000/- on a Rs 100/ stamp paper and if the Deed of Agreement is unregistered and is concluded before the Notary and partial amount of total payment of money has already been done and is recorded in that Deed of Agreement,then can the person withdraw from that Deed of Agreement by paying the amount he has taken?

If the answer to the above is affirmative then what should be the way to restrict himself