The principle of estoppel by conduct is based on the public policy that says that there must be an end to litigation. Its aim is, not only to hold a party to his undertaking that he will no longer insist on either his right to appeal or the accrued right or obligation from the judgment, but also not to allow a person benefit from his prevarication. Equity, generally abhors subterfuge, deception and some other unconscienable conduct. Equity acts in personam … It operates thus: if a person with full knowledge of the rights, interest, profits or benefits conferred upon or accruing to him by and under the law, intentionally decides to give up all these, or some of them, he cannot be heard to complain afterwards that he has not been permitted the exercise of his right, or that he has suffered by his not having exercised his rights. In the circumstance, just like in the instant case, he should be held to have waived his rights and consequently estopped from raising the issue subsequently.
— Ejembi Eko, JSC. County Dev. Co. v Hon. Min. Env. Housing Urban Dev. (2019) – SC.239/2011