This document defines consideration and provides examples of what constitutes consideration in a valid contract under Indian law. It states that consideration is something of value that is exchanged between parties to a contract, such as a promise to pay money in exchange for goods. The document outlines the legal rules regarding consideration, including that it must be real, not illusory, and cannot be past performance of an existing duty. Exceptions where a contract may be valid without consideration include promises made out of natural love and affection or to pay a time-barred debt.