Income Tax Act, 1961
Section 269AB. REGISTRATION OF CERTAIN TRANSACTIONS.
(1) The following transactions, that is to say, – (a) every transaction involving the allowing of the possession of any immovable property to be taken or retained in part performance of a contract of the nature referred to in section 53A of the Transfer of Property Act, 1882 (4 of 1882), and
(b) Every transaction (whether by way of becoming a member of, or acquiring shares in, a co-operative society, company or other association of persons or by way of any agreement or any arrangement of whatever nature) whereby a person acquires any rights in or with respect to any building or part of a building (whether or not including any machinery, plant, furniture, fittings or other things therein) which has been constructed or which is to be constructed [not being a transaction by way of sale, exchange or lease of such building or part of a building which is required to be registered under the Registration Act, 1908 (16 of 1908)], shall be reduced to writing in the form of a statement by each of the parties to such transaction or by any of the parties to such transaction acting on behalf of himself and on behalf of the other parties.
(2) Every statement in respect of a transaction referred to in sub-section (1) shall – (a) Be in the prescribed form;
(b) Set forth such particulars as may be prescribed; and
(c) Be verified in the prescribed manner, and registered with the competent authority, in such manner and within such time as may be prescribed, by each of the parties to such transaction or by any of the parties to such transaction acting on behalf of himself and on behalf of the other parties.