This document discusses the definition and exceptions to consideration under Indian contract law. It defines consideration as something in return, or quid pro quo, that makes a promise enforceable. Consideration is necessary for a valid contract but there are some exceptions. An agreement requires consideration unless it is in writing and registered, a promise to compensate for past services, or a promise to pay a time-barred debt. Other exceptions discussed include donations for charitable purposes, performance of statutory duties, completed gifts, contracts of agency, gratuitous bailments, and contracts of guarantee.