Affidavit to be annexed thereto To each account as prescribed in the preceding section must be appended the affidavit of the guardian to ...

N.Y. Surrogate's Court Procedure Act § 1720, under Guardians and Custodians.

N.Y. Surrogate's Court Procedure Act § 1720

§ 1720. Affidavit to be annexed thereto To each account as prescribed in the preceding section must be appended the affidavit of the guardian to the effect that the account is a true statement according to the best of his knowledge and belief.