Constitution of the Islamic Republic of Pakistan, 1973 — Article 55

55. Voting in Assembly and quorum..—(1) Subject to the Constitution, all decisions of the National Assembly shall be taken by majority of the members present and voting, but the person presiding shall not vote except in the case of equality of votes.

(2)If at any time during a sitting of the National Assembly the attention of the person presiding is drawn to the fact that less than one-fourth of the total membership of the Assembly is present, he shall either adjourn the Assembly or suspend the meeting until at least one-fourth of such membership is present.