Judgment of the Court (Seventh Chamber) of 18 November 2021.#M.P. and B.P. v „A.” prowadzący działalność za pośrednictwem „A.” S.A.#Reference for a preliminary ruling – Consumer protection – Directive 93/13/EEC – Unfair terms in consumer contracts – Mortgage loan agreement indexed to a foreign currency – Contractual term relating to the buying and selling rates of a foreign currency – Requirement of intelligibility and transparency – Powers of the national court.#Case C-212/20.