goods were delivered would be ascertained, and then the money would be payable at a certain time; but rejected the plaintiff's demand on the ground that the price did not become payable by the written instrument at a certain time. The other learned Judges did not agree with him, and held that the statute did not require that the document should specify the time of payment by mentioning the day of payment. If it specified the event upon which the payment was to be mad, and if the time of event was capable of being ascertained, the requirements of the section were satisfied. The same is the position in the case be ascertained upon the face of the deed, but that the basis of the calculation which was to make it certain should be found therein. We, accordingly, hold that under the agreement the date for the defendant to execute the sale deed was fixed, although not by mentioning a certain date but by a reference to the happening of a certain event, namely, the redemption of the mortgage; and, immediately after the redemption by the plaintiff, the defendant became liable to execute the sale deed which the plaintiff was entitled to enforce. The period of limitation thus started running on that date. The case is, therefore, covered by the first part of Article 54 (third column) and not the second part.