Rules on Criminal Procedure
Section 13. Justification of sureties. - Every surety shall justify by affidavit taken before the judge that he possesses the qualifications prescribed in the preceding section. He shall describe the property given as security, stating the nature of his title, its encumbrances, the number and amount of other bails entered into by him and still undischarged, and his other liabilities. The court may examine the sureties upon oath concerning their sufficiency in such manner as it may deem proper. No bail shall be approved unless the surety is qualified. (13a)