CHAPTER 3: DIFFERENT KINDS OF OBLIGATIONS
SECTION 1. - Pure and Conditional Obligations
Art. 1179. Every obligation whose performance does not depend upon a future or uncertain event, or upon a past event unknown to the parties, is demandable at once.
Every obligation which contains a resolutory condition shall also be demandable, without prejudice to the effects of the happening of the event. (1113)
Art. 1180. When the debtor binds himself to pay when his means permit him to do so, the obligation shall be deemed to be one with a period, subject to the provisions of Article 1197. (n)
Art. 1181. In conditional obligations, the acquisition of rights, as well as the extinguishment or loss of those already acquired, shall depend upon the happening of the event which constitutes the condition. (1114)
Art. 1182. When the fulfillment of the condition depends upon the sole will of the debtor, the conditional obligation shall be void. If it depends upon chance or upon the will of a third person, the obligation shall take effect in conformity with the provisions of this Code. (1115)
Art. 1183. Impossible conditions, those contrary to good customs or public policy and those prohibited by law shall annul the obligation which depends upon them. If the obligation is divisible, that part thereof which is not affected by the impossible or unlawful condition shall be valid.
The condition not to do an impossible thing shall be considered as not having been agreed upon. (1116a)
Art. 1184. 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. (1117)
Art. 1185. The condition that some event will not happen at a determinate time shall render the obligation effective from the moment the time indicated has elapsed, or if it has become evident that the event cannot occur.
If no time has been fixed, the condition shall be deemed fulfilled at such time as may have probably been contemplated, bearing in mind the nature of the obligation. (1118)
Art. 1186. The condition shall be deemed fulfilled when the obligor voluntarily prevents its fulfillment. (1119)
Art. 1187. The effects of a conditional obligation to give, once the condition has been fulfilled, shall retroact to the day of the constitution of the obligation. Nevertheless, when the obligation imposes reciprocal prestations upon the parties, the fruits and interests during the pendency of the condition shall be deemed to have been mutually compensated. If the obligation is unilateral, the debtor shall appropriate the fruits and interests received, unless from the nature and circumstances of the obligation it should be inferred that the intention of the person constituting the same was different.
In obligations to do and not to do, the courts shall determine, in each case, the retroactive effect of the condition that has been complied with. (1120)
Art. 1188. The creditor may, before the fulfillment of the condition, bring the appropriate actions for the preservation of his right.
The debtor may recover what during the same time he has paid by mistake in case of a suspensive condition. (1121a)
