Cancellation of mutation.

1[4-A. Cancellation of mutation.— Notwithstanding anything contained in any law for the time being in force or judgment or decree of a civil court any mutation attested under sections 4, 8 or 12 of this Act after its commencement, for any land mentioned in section 3 or sub-section (2) of section 4 by any revenue officer either on his own or in pursuance of any order of higher authority or order or judgement of a civil court shall be void, ab initio].