sir this is naresh i have plot in alwal where i build a house in the year 2007 by taking all the required permissions when my house construction was almost completed a person came to me saying that this land was mine after seeing his registration papers i noticed that the same land was registered to him before i was registerd then i came to an agreement with him in 2008 for taking that land where i build my house for rupees 1,60,000. and i gave him a cheque of 80000 and he gave me his entire xerox documents to me i noticed that his papers were not correct so i gave a letter to bank manager to stop him the payment for the cheque and after 3 years i.e in the year 2011 he sent me a notice and i replied that notice he dint reply me again and recently a month ago he went to that house and asked tents there that who is living in the first floor etc .
sir i want your suggestion regarding
1)how to solve this problem ?
2) when i want to sell this property will it create any problem for me ?
3)if suppose he win the case should i pay the money ant present market rate or i should pay the money as per the agreement made on that day ?