77 (2) The office of a Justice of a superior court shall not be abolished while there is a substantive holder of that office. (3) In the case of a Justice of a superior court, it shall not be necessary for the appointment to be subject to any period of probation. Retirement and resignation of Justices of the superior courts 156. (1) Subject to the provisions of this Constitution or any other law, a Justice of a superior court ­ (a) may retire at any time after attaining the age of sixty-five years subject to a service of at least ten years; (b) shall vacate office, in the case of – (i) the Supreme Court, at seventy-five years; (ii) the High Court, at seventy five years; (iii) the Supreme Court and High Court, upon removal from office in terms of section 158. (2) A Justice of a superior court may at any time resign from office by notice in writing addressed to the Chairman of the Judicial Service Commission. (3) Notwithstanding that a justice has attained the age at which that justice is required to vacate office, a Justice of a superior court may continue in office for such period, not exceeding six months, as may be necessary to enable that justice to deliver judgement or do any other thing in relation to proceedings that were commenced before that justice previously to attaining that age. Appointment of Justices of the superior courts on contract 157. (1) A person who is not a citizen of Swaziland shall not be appointed as Justice of a superior court after seven years from the commencement of this Constitution. (2) Unless otherwise agreed between the contracting parties, a judge on contract shall vacate office at the end of the period provided in the contract. Removal of Justices of superior courts 158. (1) A Justice of the Superior Court of Judicature may only be removed from office in accordance with the provisions of this section. (2) A Justice of a superior court shall not be removed from office except for stated serious misbehaviour or inability to perform the functions of office arising from infirmity of body or mind. (3) Where the King acting on the advice of an ad hoc committee in the case of the Chief Justice, and on the advice of the Chief Justice in the case of any Justice of a superior court, considers that the question of removing from office the Chief Justice or a Justice on any ground stated in sub-section (2) ought to be investigated, the King shall refer the matter to the Judicial Service Commission for investigation. 77