Is it legal to enforce Quasi Contracts?

Yes, quasi-contracts are legally enforceable. They are not actual contracts but obligations imposed by law to prevent one party from being unjustly enriched at the expense of another.

Quasi contracts are rooted in equity, justice, and good conscience and are covered under Sections 68 to 72 of the Indian Contract Act, 1872. Unlike regular contracts, they do not arise from mutual consent. 

In Lipkin Gorman v. Karpnale Ltd., the court upheld the principle, ordering the return of money wrongfully obtained. Indian courts have also applied this doctrine in cases involving mistaken payments or non-gratuitous acts benefiting another.