A defendant is on trial for aggravated assault and battery. The defendant's attorney calls the defendant's longtime landlord as a witness to testify as to the defendant's reputation and character for honesty in the community. The landlord has no personal knowledge of the facts underlying the defendant's aggravated assault and battery charge. The prosecution did not call any character witnesses during its case in chief. The prosecution objects to the landlord's testimony. Requried:
What is a valid objection to the landlord's testimony?