What are the legal rules as to consideration?

1. Consideration must move at the desire of the promisor-The act or forbearance must be done at the desire or request of the promisor. If it is done without his request or at the request of a third party it will not be a valid consideration.

2. Consideration need not be adequate but must be sufficient-It is not necessary that there must be full return for the promise. There must be something rather than nothing. The law has left the quantum of consideration to be decided by the respective parties. Thus, the law will not object to the inadequacy of consideration.The law will not enforce a promise even if it is without consideration.

3. Past consideration is not consideration

4. Forbearance to sue may be good consideration

5. Performance of existing duties.

A person who has not provided consideration cannot sue to enforce a promise.