Doctrine of frustration is provided under which section of Indian Contract Act

Section 56 of the Indian Contract Act, 1872 embodies the doctrine of frustration: a contract to do an act which, after the contract is made, becomes impossible, or, because of an event the promisor could not prevent, unlawful, "becomes void when the act becomes impossible or unlawful". In Satyabrata Ghose v. Mugneeram Bangur (1954) the Supreme Court held that "impossible" in s. 56 includes practical impossibility, not only literal impossibility. Section 73 deals with compensation for breach and s. 72 with money paid by mistake, so neither is about frustration.