Estoppel - Law of Agency and Partnership
Further the basis of estoppel was explained through the court like Spiro v. Lintern in giving such;
"Where a man is below a duty - that is, a legal duty - to disclose various fact to another as well like he does not do then the other is entitled for assume the non-existence of the fact". Conversely in the context of the law of agency here a person who is such under a legal duty to informs a third party such the person purporting to act for him like his agent is in fact not his agent although fails to do so may like "stopped" from denying as the apparent agent is in reality his agent like Spiro v. Lintern.