Ark. Code Ann. § 1-2-206

Whenever, by the decision of any circuit court, a construction may be given to any penal or other statute, every act done in good faith in conformity with that construction after the making of the decision, and before the reversal thereof by the Supreme Court of Arkansas, shall be so far valid that the party doing the act shall not be liable to any penalty or forfeiture for any act that shall have been adjudged lawful by the decision of the circuit court.