Section 73
Circumstances In Which Contracts Need Not Be Performed
Work under a contract need not be performed in any of the following circumstances:
(a) In case one party to the contract absolves the other party from fulfilling the obligations according to the contract;
(b) In case a voidable contract is made void by the party concerned;
(c) In case one can not execute the contract due to its violation by the other party;
(c) In case it becomes unnecessary to perform the work mentioned in the contract under any provision of this Act;
(d) In case it becomes unnecessary to comply with the contract under Section 79