1) under agreement between party X and Y time was essence of the contract
2)agreement provided that payment would be made by Y by 2nd may 2016 .
3) since Y did not make payment legal notice was issued by X to Y to make payment failing which agreement would stand cancelled
4) since Y failed to make payment X has sold house to you by registered sale deed
5)Y cannot claim any rights on said house .
6)since case is presently before SDM wait for his orders
7)the act of Y in putting his lock on the house is illegal