26. Under the circumstances, as per the proviso to Section 49 of the Registration Act, an unregistered document affecting immovable property and required by the Registration Act or the Transfer of Property Act to be registered, may be received as evidence of a contract in a suit for specific performance under Chapter II of the Specific Relief Act, 1877, or as evidence of any collateral transaction not required to be effected by registered instrument, however, subject to Section 17(1-A) of the Registration Act. It is not the case on behalf of either of the parties that the document/agreement to sell in question would fall under the category of document as per Section 17(1-A) of the Registration Act. Therefore, in the facts and circumstances of the case, the High Court has rightly observed and held relying upon the proviso to Section 49 of the Registration Act that the unregistered document in question, namely, unregistered agreement to sell in question shall be admissible in evidence in a suit for specific performance and the proviso is exception to the first part of Section 49.”