Consideration is an origin of any promise made to anyone, when a person makes a promise to another he does so in respect of deriving some benefit or return for his promise which another is competent to bestowing on him. This is called consideration. It is part of the contract law simply exchange of one thing of value for another thing. In the contract law, consideration is being considered so significant for the validity of an agreement that the absence of consideration make the contract invalid. Consideration is one of the six elements of contract which is required in case of a valid contract. The doctrine of consideration has been developed by the common law.