An order that the Respondent pays the entitlement as determined under paragraph 3 (a) above to the State Government of Sabah or as constitutional damages for breach of Article 13 of the Federal Constitution or both. Test in a leave application [13] Despite the extensive arguments made before the High Court and to us, we are mindful that the decision that is the subject of the appeal is the grant of leave to commence judicial review. The law is settled that the burden that an applicant must discharge to obtain leave is low regardless of the fact whether the application is heard inter parte or ex parte. The leave application is essentially a filter to weed out frivolous or wholly unmeritorious applications. We shall briefly refer to some oft quoted authorities on this point. [14] In Association of Bank Officers, Peninsular Malaysia v Malayan Commercial Banks Association [1990] 3 MLJ 228, the then Supreme Court, speaking through Ajaib Singh SCJ, said that the applicant only needs to show that the application is prima facie not frivolous or vexatious and there is some substance in the grounds to support it. The relevant passage is as follows: In his grounds of judgment the learned Judicial Commissioner had gone further than the leave stage and embarked on substantial issues on merit. We did not think that this was the right approach when the application for leave to apply for an order of certiorari is made. The guiding principles ought to be that the applicants must show prima facie that the application is not frivolous or vexatious and that there is some substance in the grounds supporting the application. On the evidence in this case we found that the appellants had prima facie an arguable case for the granting of the relief they were seeking. Their application was not frivolous or vexatious. [15] In Dr Amir Hussein bin Baharuddin v Universiti Sains Malaysia [1989] 3 MLJ 298, Edgar Joseph Jr J (as he then was) observed that the test for leave to commence judicial review is as follows: I approach this application by reminding myself that under O 53 r 3, the court exercises discretion whether to grant leave to apply for judicial review. The court is here first looking only at the ex parte application and is concerned to see whether prima facie there is a genuine case for review. [16] His Lordship then quoted with the approval the following passage from the speech of Lord Diplock at the House of Lords in Inland Revenue Commissioners v National Federation of Self Employed and Small Businesses Ltd [1982] AC 617 at p 644 which drew a distinction between the duty of a judge of first instance at the leave stage and the full hearing stage. The passage from said judgment is as follows: If, on a quick perusal of the material then available, the court (that is the judge who first considers the application for leave) thinks that it discloses what might on further consideration turn out to be arguable case in favour of granting to the applicant the relief claimed, it ought in the exercise of a judicial discretion, to give him leave to apply for that relief. The discretion which the court is exercising at this stage is not the same as that which it is called upon to exercise when all the evidence is in and the matter has been fully argued at the hearing of the application. [17] Thus, the above eminent authorities and a host of other authorities which we have not referred to are all united in saying that the threshold test for a judicial review leave application is low. Leave is normally granted when the application is found not to be frivolous and justified argument in a full hearing. We shall now refer to three authorities that said that leave may be refused if the applicant has no locus standi or the subject matter of the judicial review application is non-justiciable. We shall make brief reference to these cases before moving on to discuss the main issues of locus standi and non-justiciability. [18] In the Tang Kwor Ham & Ors v Pengurusan Danaharta Nasional Bhd & Ors [2006] 1 CLJ 927, leave to commence judicial review against a statutory body was refused by the High Court. The Court of Appeal in a majority decision reversed the High Court and granted leave. However, Gopal Sri Ram JCA (as he then was), speaking for the majority, also mentioned two situations in which leave may be refused. The relevant passage is as follows: To paraphrase in less elegant language what has been said in these cases, the High Court should not go into the merits of the case at the leave stage. Its role is only to see if the application for leave is frivolous. If, for example, the applicant is a busybody, or the application is made out of time or against a person or body that is immunised from being impleaded in legal proceedings then the High Court would be justified in refusing leave in limine. So too will the court be entitled to refuse leave if it is a case where the subject matter of the review is one which by settled law (either written law or the common law) is non-justiciable, eg, proceedings in Parliament (see art. 63 of the Federal Constitution). (emphasis ours) [19] In the case of QSR Brands Bhd v Suruhanjaya Sekuriti & Anor [2006] 3 MLJ 164, the Court of Appeal in a unanimous decision, again speaking through Gopal Sri Ram JCA said that to justify a leave application to commence judicial review, the applicant need only satisfy what is known as “threshold locus standi”. The passage in question from the said judgment is as follows: Historically speaking, the requirement of standing to approach a court for judicial review was one that was established by the courts to keep out litigants who had no legitimate grievance against the administrative arm of the State. The object was to prevent them from crossing the threshold of the courts of justice. This requirement established by judges for themselves that only those with a legitimate grievance may cross the threshold and enter the court is what is known as ‘threshold locus standi’. It is quite different from the doctrine of ‘substantive locus standi’, which falls to be determined by court at the very end of the case, when it comes to decide whether on the facts and circumstances discretion ought to be exercised in the applicant's favour (see Tan Sri Haji Othman Saat v Mohamed bin Ismail ([1982] 2 MLJ 177). (emphasis ours) [20] On the test for leave, the last authority we shall cite is the Federal Court case of WRP Asia Pacific Sdn Bhd v Tenaga Nasional Bhd [2012] 4 CLJ 478, where Suriyadi Halim Omar FCJ, in the following passage, emphasised that the subject matter must in the first place, be amenable to judicial review for leave to be granted: Without the need to go into depth of the abundant authorities, suffice if we state that leave may be granted if the leave application is not thought of as frivolous, and if leave is granted, an arguable case in favour of granting the relief sought at the substantive hearing may be the resultant outcome. A rider must be attached to the application though i.e., unless the matter for judicial review is amenable to judicial review absolutely no success may be envisaged. (emphasis ours) Decision of High Court [21] The learned High Court Judge found that the threshold for a leave application to commence judicial review was met by the SLS. His Lordship did not delve into the merits of the judicial review in depth as it was unnecessary at the leave stage. He dismissed the argument that the applicant has no locus standi or is otherwise a busybody. In respect of the argument that the subject matter is non-justiciable, the learned High Court Judge said that the applicant is not asking the court to question to review the contents of the Review Order 2022. Rather, the applicant is seeking redress for breach of a constitutional duty owed to Sabah under the Federal Constitution. His Lordship held that this issue cannot be determined at the leave stage but should be argued at the substantive stage. Issues in the appeal [22] The AG raised four grounds of appeal in the supplementary memorandum of appeal. The first ground is that the High Court erred in concluding that the SLS has locus standi. The second ground is that the High Court erred in ruling that the relief sought by SLS was “for public redress for breach of the constitutional duty to pay 40% entitlement” when the same is not amenable to judicial review. The third ground is the finding by the High Court that judicial review application instituted by the SLS is a “public interest litigation”. The fourth ground is that the High Court erred in holding that the SLS is acting on behalf of the people of Sabah as only the Sabah Government can play that role. [23] The said grounds centre around only two main issues that were also raised before the High Court and also argued before us via the written and oral submissions. The said issues are locus standi and justiciability of the subject matter of the judicial review application. The learned SFC did not address us at length on the merits of the judicial review application. As the decision of the High Court is only a leave application, we shall accordingly not deal with the substantive merits either. We have only adverted to the historical background and the relevant constitutional provisions to provide context for the judicial review application instituted by the SLS. Locus standi [24] The learned SFC strenuously argued before us that the SLS has no locus standi to institute the judicial review application. His grounds for this argument are as follows. [25] Firstly, he cited Order 53 rule 2(4) of the Rules of Court 2012 that governs judicial review applications. The rule reads as follows: 2(4) Any person who is adversely affected by the decision, action or omission in relation to the exercise of the public duty or function shall be entitled to make the application. [26] The learned SFC submitted that there was no decision in this case to start with and therefore, the SLS has no locus standi to commence judicial review. However, the learned SFC did not elaborate on the significance of the Review Order 2022. We plainly find no merit in this argument as an “omission” is also a decision under Order 53 rule 2(4) of the Rules of Court