(1) Any party aggrieved by an order under sub-section (2) of Section 11 of Section 12, may, within thirty days of the date of the order, prefer an appeal to the [Commissioner] within whose jurisdiction the land or any part thereof is situate.
(2) The [Commissioner] shall dispose of the appeal as expeditiously as possible and his decision thereon shall be final and conclusive and be not questioned in any court of law.
(3) Where an appeal is preferred under this section, the [Commissioner] may stay enforcement of the order appealed against for such time and on such conditions as may be considered just and proper:
[Provided that the enforcement of the order appealed against shall not be stayed in respect of that part of the land, the surplus character of which was either not disputed in an objection under subsection (2) of Section 10 or under sub-section (2) of Section 11 or is not disputed in the appeal of any stay order passed under this sub-section (2) of Section 11 or is not disputed in the appeal of any stay order passed under this sub-section before twenty-eighth day of September, 1970, shall on an application being made in that behalf to the appellate court by the State Government, be modified by that court accordingly.
Explanation — For the purposes of this proviso any dispute respecting the regularity, validity or legality of a notice under Section 9 or Section 10 or of the proceedings before the prescribed authority shall not, by itself be deemed to be a dispute respecting the surplus character of land. ]