Maxim

This maxim bars relief for anyone guilty of improper conduct in the matter at hand. It operates to prevent any affirmative recovery for the person with "unclean hands," no matter how unfairly the person's adversary has treated him or her. The maxim is the basis of the clean hands doctrine. Its purpose is to protect the integrity of the court. It does not disapprove only of illegal acts but will deny relief for bad conduct that, as a matter of public policy, ought to be discouraged. A court will ask whether the bad conduct was intentional. This rule is not meant to punish carelessness or a mistake. It is possible that the wrongful conduct is not an act but a failure to act. For example, someone who hires an agent to represent him or her and then sits silently while the agent misleads another party in negotiations is as much responsible for the false statements as if he himself or she herself had made them.

The bad conduct that is condemned by the clean hands doctrine must be a part of the transaction that is the subject of the lawsuit. It is not necessary that it actually have hurt the other party. For example, equity will not relieve a plaintiff who was also trying to evade taxes or defraud creditors with a business deal, even if that person was cheated by the other party in the transaction.

Equity will always decline relief in cases in which both parties have schemed to circumvent the law. In one very old case, a robber filed a bill in equity to force his partner to account for a sum of money. When the real nature of the claim was discovered, the bill was dismissed with costs, and the lawyers were held in CONTEMPT of court for bringing such an action. This famous case has come to be called The Highwayman (Everet v. Williams, Ex. 1725, 9 L.Q. Rev. 197), and judges have been saying ever since that they will not sit to take an account between two robbers.