I purchased a property in 50 lacs from Mr X in Aug 2014 on which i am running my hospital. Now in Oct2016 I got a legal notice from a person who is claiming that he has sale agreemnet of same property from the Mr X done in Jan 2014. As per notice he has paid 38 lac as advance to Mr X and rest he had to pay on sale deed. But Mr X made sale deed with you. So he is asking to vacate the property....what should I do?