Need for personal knowledge. A witness may testify to a matter only if evidence is

introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may consist of the witness’s own testimony. This rule does not apply to a witness’s expert testimony under rule 5.703. [Report 1983; November 9, 2001, effective February 15, 2002; September 28, 2016, effective January 1, 2017]