La. Code Evid. art. 602
Current with changes from the 2024 First and Second Extraordinary Sessions
A witness may not testify to a matter unless evidence is introduced sufficient to support a finding that he has personal knowledge of the matter. Evidence to prove personal knowledge may, but need not, consist of the testimony of the witness himself. This Article is subject to the provisions of Article 703, relating to opinion testimony by expert witnesses.
La. C.E. § 602