What is Obligation of person enjoying benefit of non-gratuitous act? Section 70 of Indian Contract Act 1872
70. Where a person lawfully does anything for another person, or delivers anything to him, not intending to do so gratuitously, and such other person enjoys the benefit thereof, the latter is bound to make compensation to the former in respect of, or to restore, the thing so done or delivered2.
(a) A, a tradesman, leaves goods at B's house by mistake. B treats the goods as his own. He is bound to pay A for them.
(b) A saves B's property from fire. A is not entitled to compensation from B, if the circumstances show that he intended to act gratuitously.
Contracts which need not be performed
CHAPTER V CERTAIN RELATIONS RESEMBLING THOSE CREATED BY CONTRACT
CHAPTER VI THE CONSEQUENCES OF BREACH OF CONTRACT
CHAPTER VII SALE OF GOODS
Section 76-123 Sale of Goods omitted
CHAPTER VIII INDEMNITY AND GUARANTEE