Constitution bench is the name given to the benches of the Supreme Court of India which consist of at least five judges of the court which sit to decide any case “involving a substantial question of law as to the interpretation” of the Constitution of India or "for the purpose of hearing any reference" made by the President of India under Article 143. This provision has been mandated by Article 145 (3) of the Constitution of India. Also, matters related to the Amendment of an Act of the Indian Parliament are referred to the Constitution Bench by the Supreme Court under the same act. The Chief Justice of India has the power to constitute a Constitution Bench and refer cases to it.