The doctrine of frustration means that when, after a valid contract is made, a supervening event occurs without fault of either party, and that event makes performance impossible, unlawful, or fundamentally different from what the parties originally contemplated, the contract becomes void under Section 56 of the Indian Contract Act, 1872.
Meaning
Section 56 embodies the rule that the law does not compel a person to do what has become impossible. Frustration is therefore a mode of discharge of contract by operation of law, not by choice of the parties.