A power of attorney (POA) or letter of attorney in common law systems or mandate in civil law systems is an authorization to act on someone else's behalf in a legal or business matter. The person authorizing the other to act is the principal, granter or donor (of the power), and the one authorized to act is the agent, the attorney-in-factor in many Common Law jurisdictions, simply the attorney.

Is ka matlab aap kisi insan ko us cheej ki permission de rahe hai jis kaam ke liye aap ko khud upasthit rehna padta