Put shortly, the question that falls to be decided is: Is it within the competence of the court to examine the grounds communicated to a person detained under the Act, with a view to see if they are sufficient in its opinion to enable him to make a representation to the detaining authority against the order, and if they are not, to direct his release ? It is now settled by the decision of the majority in Gopalan 's case(1) that article 21 is applicable to preven tive detention except in so far as the provisions of article 22 (4) to (7) either expressly or by necessary implication exclude its application, with the result that a person cannot be deprived of his personal liberty, even for preven tive purposes, "except according to procedure established by law." Part of such procedure is provided by the Constitution itself in clauses (5) and (6) of article 22 which read as follows: "(5) When any person is detained in pursuance of an order made under any law providing for preventive detention, the authority making the order shall, as soon as may be, communicate to such person the grounds on which the order has been made and shall afford him the earliest opportunity of making a representation against the order.