Section 2(1)(d) in National Financial Reporting Authority Rules, 2018
(d)"auditor" means an individual or a firm including a limited liability partnership incorporated under the Limited Liability Partnership Act, 2008 (6 of 2009) or any other Act for the time being in force, who has been appointed as an auditor of a company or a body corporate under section 139 of the Act or under any other Act for the time being in force;