Is a seller bound by an oral agreement to sell the his property

I have two adjacent plots for sale and one person showed interest to buy them, paid me a small amount as token advance and took Xerox copies of the land with an oral assurance that within 30 days the sale transaction will be completed.After ten days he said he could buy only one plot and will find another buyer to buy the other plot for the agreed sale price.I refused.But he says because the agreement is for 30 days and he is ready to pay the agreed sale price,I should sell the land only to him.can he force me to sell to two different person the two plots on the same day? Nothing is given in writing between the buyer and seller,no sale agreement in writing is signed, no MOU,only oral understanding between the parties.I am ready to sell if only one person buys both plots and not to two different persons.I have only one sale deed in which both plots are registered with respective schedule of property in one deed.He is refusing to take back the token money and forcing me to sell it to him