Urgent help regarding arrears of rent

Need urgent help on this topic- In a case Ram owned a shop outside the bus stand of a town. He Rented the same shop to Sham for 20000 per month for five years. Sham regularly paid the rent, but after two years the bus stand got shifted to some other place. The number of customers in sham's shop considerably reduced and he refused to pay the rent on the plea that contract has came to an end due to the frustration of the object in view of shifting of the bus stand. Ram insists that Sham should continue to pay the rent for 5 years for which ram Filed a suit for the arrears of rent. What are the legal provisions available to Ram for getting the rent Under the Indian Contract Act And does any provisions of the Transfer of property act are available to Ram. Please Reply Urgently Thank you