An agreement to do an act impossible in itself is void.
A contract to do an act which, after the contract is made, becomes impossible, or, by reason of some event which the promisor could not prevent, unlawful, becomes void when the act becomes impossible or unlawful.
Where one person has promised to do something which he knew, or, with reasonable diligence, might have known, and which the promisee did not know, to be impossible or unlawful, such promisor must make compensation to such promisee for any loss which such promisee sustains through the non-performance of the promise.
Illustrations
(a) A agrees with B to discover treasure by magic. The agreement is void.
(b) A and B contract to marry each other. Before the time fixed for the marriage, A goes mad. The contract becomes void.
(c) A contracts to marry B, being already married to C, and being forbidden by the law to which he is subject to practise polygamy. A must make compensation to B for the loss caused to her by the non-performance of his promise.
(d) A contracts to take in cargo for B at a foreign port. A's Government afterwards declares war against the country in which the port is situated. The contract becomes void when war is declared.
(e) A contracts to act at a theatre for six months in consideration of a sum paid in advance by B. On several occasions A is too ill to act. The contract to act on those occasions becomes void.
Legal Commentary & Landmark Judgments: Section 56
An agreement to do an act impossible in itself is void ab initio. Where a contract valid at inception subsequently becomes impossible or unlawful to perform due to an unforeseen supervening event beyond the control of the parties, the contract becomes void the moment the act becomes impossible or unlawful, discharging all parties by operation of the doctrine of frustration.
This statutory framework establishes clear operational guidelines, balancing legal compliance with procedural safeguards.
Commercial contracts during pandemics, wars, or sudden regulatory shifts frequently trigger Section 56 litigation. Courts interpret Section 56 strictly: economic hardship, currency fluctuations, or supply chain bottlenecks never constitute frustration. Where Section 56 operates to discharge a contract, Section 65 immediately mandates full restitution of all benefits and advances received.