The law of sale by auction or auction sale protects the purchaser and that is the basis of the principle of law that a mortgagor’s right essentially is in damages. The law has an important qualification and it is that the purchaser must have bought the mortgaged property in good faith, that is bona fide and not in bad faith, that is mala fide. The sympathies of the law on the purchaser will vanish the moment the court comes to the conclusion that the purchaser bought the property in bad faith. Bad faith on the part of the purchaser is a matter of fact to be deduced from the totality of the purchasing or buying conduct of the purchaser. Bad faith taints or better still, destroys a mortgage sale and therefore the property in the sale.
– Niki Tobi JSC. Okonkwo v. Cooperative Bank (2003)