Transfer of Property Act, 1882 — section 42

42. Transfer by person having authority to revoke former transfer..—Where a person transfers any immoveable property reserving power to revoke the transfer, and subsequently transfers the property for consideration to another transferee, such transfer operates in favour of such transferee (subject to any condition attached to the exercise of the power) as a revocation of the former transfer to the extent of the power. Illustration A lets a house to B, and reserves power to revoke the lease if, in the opinion of a specified surveyor, B should make a use of it detrimental to its value. Afterwards A, thinking that such a use has been made, lets the house to C. This operates as a revocation of B’s lease subject to the opinion of the surveyor as to B’s use of the house having been detrimental to its value. 43. Transfer by unauthorized person who subsequently acquires interest in property transferred.—Where a person 1[fraudulently or] erroneously represents that he is authorized to transfer certain immoveable property and professes to transfer such property for consideration, such transfer shall, at the option of the transferee, operate on any interest which the transferor may acquire in such property at any time during which the contract of transfer subsists. Nothing in this section shall impair the right of transferees in good faith for consideration without notice of the existence of the said option. Illustration A, a Hindu, who has separated from his father B, sells to C three fields, X, Y and Z, representing that A is authorized to transfer the same. Of these fields Z does not belong to A, it having been retained by B on the partition; but on B’s dying A as heir obtains Z. C, not having rescinded the contract of sale, may require A to deliver Z to him.