1. Where the Authority or, as the case may be, the Appellate Authority finds that advance ruling pronounced by it under sub-section (4) of section 117 or under sub-section (1) of section 119 has been obtained by the applicant or, as the case may be, the appellant by fraud or suppression of material facts or misrepresentation of facts, it may, by order, declare such ruling to be void ab initio and thereupon all the provisions of the Act shall apply to the applicant as ifsuch advance ruling had never been made:
PROVIDED that no order shall be passed under this sub-section unless an opportunity has been given to the applicant of being heard.
Explanation.- The period beginning with the date of such advance ruling and endingwith the date of order under this sub-section shall be excluded in computing the period specified in sub-sections (2) and (8) of section 66 or sub-sections (2) and (8) of section 67, as the case may be.
2. A copy of the order made under sub-section (1) shall be sent to the applicant and the prescribed officers.