Rules on Civil Procedure
Section 4. Verification. - Except when otherwise specifically required by law or rule, pleadings need not be under oath, verified or accompanied by affidavit .(5a)
A pleading is verified by an affidavit that the affiant has read the pleading and that the allegations therein are true and correct of his knowledge and belief.
A pleading required to be verified which contains a verification based on "information and belief", or upon "knowledge, information and belief", or lacks a proper verification, shall be treated as an unsigned pleading. (6a)