Civil Code (Cap. 16), article 717

717. A condition which, in the intention of the testator, is merely meant to suspend the execution of the testamentary disposition, shall not operate so as to bar the heir or legatee from acquiring, even before the fulfilment of the condition, a veste d right transmissible to the h eirs of such h eir or legatee. Where heir or legatee is bound to give security for fulfilment of condition.