Section 18(4)(a) in Gujarat Gas (Regulation of Transmission, Supply and Distribution) Act, 2001
(a)to produce before or to allow to be examined by an officer of the Authority authorised by it in this behalf, such books, accounts or other documents relating to the functioning of the company engaged in transmission of gas or of any undertaking engaged in supply, distribution or use of gas, in the custody or under the control of such company or person,