The principle covered under S.115 of Indian Evidence Act is?

IEA S. 115 Estoppel. — When one person has, by his declaration, act or omission, intentionally caused or permitted another person to believe a thing to be true and to act upon such belief, neither he nor his representative shall be allowed, in any suit or proceeding between himself and such person or his representative, to deny the truth of that thing. Estoppel is a rule of evidence which is defined under S.115 of the Indian Evidence Act, 1872. Estoppel is different from Admissions. Admissions are defined under S.17 of the IEA and are statement made against the interests of the maker generally.