Property sale under Pugree system

Dear Sir/Madam We have a small property in Vile parle (Mumbai) which was purchased by my parents in 90s, which comes under Pugree system,I being only son of my parents we decided to sell this property and invest the same in another ownership property,today my mother visited the landlord mentioning the same to him,to our surprise the land lord said we cannot sell the property to any outsider(in spite we agreed to pay the landlord 33% of his share),land lord said the property has to be sold to them with price fixed by him and not the market price which we are getting by selling property in market.Else he will grab us to court if we try to sell property to any outsider. Please suggest what can be the solution for this issue,is there any law which protects the tenant rights from such landlords.