Section 664: Unjust enrichment to be deemed

1) If any person gets any benefit or advantage from another person, without the reason of doing any lawful act or fulfilling any obligation, the person who so gets the benefit or advantage shall be deemed to have got an unjust enrichment.

2)A person shall be deemed to have got an unjust enrichment under sub-section (1) in any of the following circumstances:

(a) If there is an increment in his or her property or a decrease in his or her liability,

(b) If he or she receives a service from another or causes another to do work,

(c) If another’s property is used for him or her.

3) Notwithstanding anything contained in sub-section (1) or (2), even if any person gets any goods, service, benefit or advantage in any manner, except in any of the following circumstances, he or she shall be deemed to have got an unjust enrichment:

(a) If any goods, service, benefit or advantage can be obtained from any person under a law or contract,

(b) If the person, from whom any goods, service, benefit or advantage have been obtained, has agreed with free consent not to take back or reimburse the same.

4) In determining whether or not and to what extent any person has an unjust enrichment under this Chapter, no consideration shall be granted to any disadvantage or loss or damage caused thereby to him or her after he or she has obtained the unjust enrichment.

5) If a person gets an unjust enrichment pursuant to this Section, the person shall bear the obligation under this Chapter.