Iowa Code § 633.202
In no case shall the compensation of fiduciaries and their attorneys be allowed or paid until there shall have been filed with the clerk of the district court in which administration of the estate is pending an affidavit of the fiduciary, or attorney, as the case may be, stating that there is no contract, agreement, or arrangement, either oral or written, express or implied, contemplating any division of compensation for such services, or participation therein, directly or indirectly, by any other person, firm, or corporation with such fiduciary or attorney, unless it be with a regular and bona fide law partner, or with one jointly serving with them in the same capacity in relation to the estate in which such compensation is allowed, in which event the affidavit shall show such fact.
Iowa Code § 633.202
Referred to in §633.203