Before payment of a judgment or order, the Comptroller shall require the claimant to certify on oath that no commission, discount, bonus, reward or present of any kind was promised or was given to or was received or is expected by any state officer or employee or any member of the General Assembly in respect to his claim and that to the best of his knowledge and belief no state officer or employee and no member of the General Assembly used, offered to use or attempted to use his office or position to influence the decision on such claim.