Maryland Criminal Law Section 3-320

      In a criminal prosecution under §§ 3-303 through 3-312, § 3-314, or § 3-315 of this subtitle, a judge may not instruct the jury:

            (1)      to examine the testimony of the prosecuting witness with caution, solely because of the nature of the charge;

            (2)      that the charge is easily made or difficult to disprove, solely because of the nature of the charge; or

            (3)      to follow another similar instruction, solely because of the nature of the charge.