Ratification of unauthorized act cannot injure third person

Ratification of unauthorized act cannot injure third person.-An act done by one person on behalf of another, without such other person's authority, which, if done with authority, would have the effect of subjecting a third person to damages, or of terminating any right or interest of a third person, cannot by ratification, be made to have such effect.

Illustrations.

1. (a) A, not being authorised thereto by B, demands on behalf of B, the delivery of a chattel, the property of B, from C, who is in possession of it. This demand cannot be ratified by B, so as to make C liable for damages for his refusal to deliver.
2. (b) A holds a lease from B, terminable on three month's notice C, an unauthorised person, gives notice of termination to A.