Maryland Code, Estates and Trusts § 1-102

(a) When a writing is required to be verified by this article, verification is sufficient if the writing is signed by the person required to make the verification, and if it contains the representation contained in subsection (b) of this section.

(b) The form of verification is:

I do solemnly declare and affirm under the penalties of perjury that the contents of the foregoing document are true and correct to the best of my knowledge, information, and belief.

(c) Every inventory, account, and other document containing recitations of fact must be verified.