116. (1) The ¹[* * *] ²[Directors-General of Inspection], ³[the Commissioner, the Director General, Central Intelligence Cell,] and the Inspecting Joint Commissioner may, without prejudice to other powers which they may have under other provisions of this Ordinance, make any enquiry which they consider necessary as respects any person liable, or believed by them to be liable, to assessment under this Ordinance, or ⁴[require any such person or any other person in relation to such enquiry to appear before him at the time and place as directed for providing any information or to produce or cause to be produced necessary documents, accounts or records including any electronic records and systems referred to in the Explanation of sub-section (2) of section 117 under the possession or control of such person or such other person]. (2) For the purpose of sub-section (1), the ⁵[* * *] ⁶[Directors- General of Inspection], ⁷[the Commissioner, the Director General, Central Intelligence Cell,] and the Inspecting Joint Commissioner shall have the same powers as the Deputy Commissioner of Taxes has under this Ordinance for the purposes of making enquiry or requiring the production of accounts or documents including the powers under section 117(2). (3) ⁸[The Commissioner, the Director General, Central Intelligence Cell,] the Inspecting Joint Commissioner, the Deputy Commissioner of Taxes or an Inspector, if he is so authorised in writing, may, for the purpose of making any enquiry which he considers necessary, enter the premises in which a person liable or believed by him to be liable to assessment, carries on his business or profession, and may call for and inspect any such person's accounts or any documents in his possession and may stamp any accounts or documents so inspected and may retain such accounts or documents for so long as may be necessary for examination thereof or for the purposes of a prosecution: Provided that the Deputy Commissioner of Taxes or an Inspector shall not make any enquiries from any scheduled bank regarding any client of such bank except with the prior approval of the ⁹[* * *] Commissioner.