Certain transfers to be invalid.

Notwithstanding any thing to the contrary contained

in any other law for the time being in force, or in any contract, custom or usage, or in any judgment, decree or order of any court, any transfer of immovable property possessed, enjoyed or owned by a member of a Scheduled Tribe to a person other than a member of a Scheduled Tribe, effected on or after the 1st day of January, 1960, and before the commencement of this Act shall be deemed to be invalid.