The condition that some event happen at a determinate time shall extinguish the obligation as soon as the time expires or if it has become indubitable that the event will not take place.
Ang kalagayan na ang ilang mga kaganapan mangyari sa isang takdang panahon ay maaaring mawala na ang obligasyon hanggang sa dumating ang takdang panahon na ito ay wala ng bisa o kung ito ay walang kadudaduda na ang pangyayari at hindi na mangyayari.
Martin v. Boyero
Facts: A sold B a parcel of land on condition that the price would be paid as soon as B had paid off the mortgage and other debts of the estate. A waited for some time, but since B had not yet succeeded in paying off the debts, A brought an action to cancel the sale.
Held: The sale will not be cancelled. There was no time stipulated here, and besides, B was trying his best to comply with his agreement. So B must be given more time.
Obligations and Contracts 