An act the completion of which depends upon the will of the parties may be revoked, but if it depends upon the will of third parties or upon a contingency, it cannot be revoked.
An act the completion of which depends upon the will of the parties may be revoked, but if it depends upon the will of third parties or upon a contingency, it cannot be revoked.
An act already begun, the completion of which depends on the will of the parties, may be revoked; but if it depend on the will of a third person or on a contingency, it cannot be revoked. Bac. Max. reg. 20.