Section 183 in The Indian Contract Act, 1872
Title: Who may employ agent.
Any person who is of the age of majority according to the law to which he is subject, and who is of sound mind, may employ an agent.
Title: Who may be an agent.
As between the principal and third persons, any person may become an agent, but no person who is not of the age of majority and of sound mind can become an agent, so as to be responsible to his principal according to the provisions in that behalf herein contained.
Title: Consideration not necessary.
No consideration is necessary to create an agency.
Title: Agent's authority may be expressed or implied.
The authority of an agent may be expressed or implied1.
1. See, however, the Registration Act, 1908 (16 of 1908), s. 33; see also the Code of Civil Procedure, 1908 (5 of 1908), Sch. I, Order III, rule 4.
Title: Definitions of express and implied authority.
An authority is said to be express when it is given by words spoken or written. An authority is said to be implied when it is to be inferred from the circumstances of the case; and things spoken or written, or the ordinary course of dealing, may be accounted circumstances of the case.
A owns a shop in Serampore, living himself in Calcutta, and visiting the shop occasionally. The shop is managed by B, and he is in the habit of ordering goods from C in the name of A for the purposes of the shop, and of paying for them out of A's funds with A's knowledge. B has an implied authority from A to order goods from C in the name of A for the purposes of the shop