Judgment of the Court (Tenth Chamber) of 30 March 2023.#Proceedings brought by М. Ya. M.#Request for a preliminary ruling from the Sofiyski rayonen sad.#Reference for a preliminary ruling – Judicial cooperation in civil matters – Measures relating to the law on succession – Regulation (EU) No 650/2012 – Article 13 – Declaration concerning the waiver of a succession made by an heir before the court of the Member State of his or her habitual residence – Subsequent registration of that declaration, at the request of another heir, in the register of another Member State.#Case C-651/21.