Rule 5-602. Lack of Personal Knowledge

Except as otherwise provided by Rule 5-703, a witness may not testify to a matter unless evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may, but need not, consist of the witness's own testimony. Committee note: This Rule does not prevent the admission of testimony as to a witness's own age, date of birth, or other similar matters of personal history, when a requirement of first-hand knowledge cannot be met.