Bankruptcy Rules

Before taxing the bill or charges of any solicitor, manager, accountant,
            auctioneer, broker or other person employed by the trustee, the taxing officer shall
            require a certificate in writing, signed by the trustee, to be produced to him, setting
            forth whether any, and if so what, special terms of remuneration have been agreed to,
            and, in the case of the bill of costs of a solicitor, a copy of the resolution or other
            authority sanctioning the employment.