What is Knowledge requisite for valid ratification? Effect of ratifying unauthorized act forming part of a transaction? Section 198 and 199 of Indian Contract Act 1872
198. No valid ratification can be made by a person whose knowledge of the facts of the case is materially defective.
199. A person ratifying any unauthorized act done on his behalf ratifies the whole of the transaction of which such act formed a part.
Revocation of Authority