धारा 117

Where a contract is made with a person competent to transfer for consideration a share in land, such contract shall be void, unless the transferee is a trustee for the transferor, or unless the transferee is a mortgagee under a mortgage to the transferor, or unless the transferee is a lessee from the transferor, or unless the contract is registered, and the transferee has given possession of the property to the transferor, or unless the transferee is a purchaser from a person competent to transfer, and the contract has been registered, and the transferee has given possession of the property to the transferor.