State of Rajasthan vs Basant Nehata - 2005 (12) SCC 77

Supreme Court of India observed
"A grant of power of attorney is essentially governed by Chapter X of the Contract Act. By reason of a deed of power of attorney, an agent is formally appointed to act for the principal in one transaction or a series of transactions or to manage the affairs of the principal generally conferring necessary authority upon another person. A deed of power of attorney is executed by the principal in favour of the agent. The agent derives a right to use his name and all acts, deeds and things done by him and subject to the limitations contained in the said deed, the same shall be read as if done by the donor. A power of attorney is, as is well known, a document of convenience. Execution of a power of attorney in terms of the provisions of the Contract Act as also the Powers-of-Attorney Act is valid. A power of attorney, we have noticed hereinbefore, is executed by the donor so as to enable the donee to act on his behalf. Except in cases where power of attorney is coupled with interest, it is revocable. The donee in exercise of his power under such power of attorney only acts in place of the donor subject of course to the powers granted to him by reason thereof. He cannot use the power of attorney for his own benefit. He acts in a fiduciary capacity. Any act of infidelity or breach of trust is a matter between the donor and the donee."