Section 465(1)(k) in The Gujarat Provincial Municipal Corporations Act, 1949
(k)prescribing the conditions under which and, subject to the provisions of sub-section (2) of section 50, the authorities by whom the said officers and servants or any of them, may be permitted while on duty or during leave to perform a specified service or series of services for a private person or body or for a public body, including a local authority, or for the Government and to receive remuneration therefor;