they have used it in proper cases as has been pointed out above, although such cases have been few and the grounds on which the courts have interfered with them at the pre-execution stage are necessarily very limited in scope and number, viz., where the courts are prima facie satisfied (i) that the impugned order is not passed under the Act under which it is purported to have been passed, (ii) that it is sought to be executed against a wrong person, (iii) that it is passed for a wrong purpose, (iv) that it is passed on vague, extraneous and irrelevant grounds or (v) that the authority which passed it had no authority to do so. The refusal by the courts to use their extraordinary powers of judicial review to interfere with the detention orders prior to their execution on any other ground does not amount to the abandonment of the said power or to their denial to the proposed detenu, but prevents their abuse and the perversion of the law in question.”