Okla. Stat. tit. 58 § 176
In all cases where bonds are required to be given, under this title, the officer taking the same must require the sureties to accompany it with an affidavit that they are each residents and householders or freeholders within the state, and are each worth the sum specified in the bond, over and above all their just debts and liabilities, exclusive of property exempt from execution; but when the amount specified in the bond exceeds One Thousand Dollars ($1,000.00), and there are more than two sureties thereon, they may state in their affidavits that they are severally worth amounts less than that expressed in the bond, if the whole amount be equivalent to that of two sufficient sureties, and the affidavits thereof must be attached to, and filed and recorded with the bond. All such bonds must be approved by the judge of the district court before being filed and recorded. Before the judge of the district court approves any bond required under this title, and after its approval he may of his own motion, or upon the motion of any person interested in the estate, supported by affidavit that the sureties or some one or more of them are not worth as much as they have justified to, issue a citation, requiring such sureties to appear before him, at a designated time and place, to be examined touching their property and its value; and the judge must, at the same time, issue a notice to the executor or administrator, requiring his appearance on the return of the citation, and on its return he may examine the sureties and such witnesses as may be produced, touching the property of the sureties and its value; and if, upon such examination, he is satisfied that the bond is insufficient, he must require sufficient additional security.
Okla. Stat. tit. 58, § 176