Which follow from application of the undermentioned legal principle:
LEGAL PRINCIPLE: Contract is an agreement freely entered into between the parties.
FACTUAL SITUATION: Tapan was a dealer in mustard oil. The Government of India by an order issued under the Essential Commodities Act, fixed the price of mustard oil, and also the quantity which a person can buy from the dealer. Tapan carried on his business under this order for a while, but he refused to pay sales tax on his sale transactions on the ground that these were not the contracts freely entered into by him.
DECIDE