Case C-136/20: Judgment of the Court (First Chamber) of 6 October 2021 (request for a preliminary ruling from the Zalaegerszegi Járásbíróság — Hungary) — Proceedings relating to the recognition and enforcement of a financial penalty imposed on LU (Reference for a preliminary ruling — Area of freedom, security and justice — Framework Decision 2005/214/JHA — Enforcement of financial penalties — Principle of mutual recognition — Article 5(1) — Offences giving rise to the recognition and enforcement of penalty decisions without verification of the double criminality of the act — Article 5(3) — Offences in respect of which the Member State has the option of making the recognition and enforcement of penalty decisions subject to the double criminality of the act — Verification by the executing Member State of the legal characterisation given to the offence by the issuing Member State in the certificate accompanying the penalty decision)