24 C.F.R. 966.6

suit or to waive the right to file a suit in equity to prevent the execution of a judgment.
(h) Tenant chargeable with cost of legal actions regardless of outcome. Provision that the tenant agrees to pay attorney's fees or other legal costs whenever the landlord decides to take action against the tenant even though the court determines that the tenant prevails in the action. Prohibition of this type of provision does not mean that the tenant as a party to the lawsuit may not be obligated to pay attorney's fees or other costs if he loses the suit.