What is the position of contracts entered before 1872

Before the enactment of the Indian Contract Act, 1872, there was no codified law for contract in India. In the Presidency Towns of Madras, Bombay and Calcutta law relating to contract was dealt with the Charter granted in 1726 by King George I to the East India Company. Thereafter in 1781, in the Presidency Towns, Act of Settlement passed by the British Government came into force. Act of Settlement required the Supreme Court of India that questions of inheritance and succession and all matters of contract and dealing between party and party should be determined in case of Hindu as per Hindu law and in case of Muslim as per Muslim law and when parties to a suit belonged to different persuasions, then the law of the defendant was to apply. In outside Presidency Towns matters with regard to contract was mainly dealt with English Contract Laws; the principle of justice, equity and good conscience was followed.

source : https://en.wikipedia.org