Md. Code, Criminal Law § 3–320

In a criminal prosecution under § 3–303, § 3–304, §§ 3–307 through 3–310, § 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.