A person who has served as a member of Parliament for any period of time shall, on his death or on his ceasing to be a member of Parliament in any circumstance, other than where he becomes disqualified as a member of Parliament, or where he vacates his office under article 97 (1) (c) or (d), be eligible for the payment to his personal representatives or to him of such gratuity proportionate to his period of service as shall be determined by the President, acting in consultation with the Committee referred to in article 71 of this Constitution.