22. 工作组重申，禁止任意拘留是习惯国际法的组成部分。这借鉴了人权机构的既定做法，即将禁止任意拘留视为习惯国际法的一项准则，被权威性地公认为国际法的强制规范或强制性法规；除其他外，见人权事务委员会在关于在紧急状态期间克减《公约》条款的第 29 号一般性意见(2001 年)中表述的联合国的既定做法(CCPR/C/21/Rev.1/Add.11,第 11 段)。工作组在其各项意见中遵循这项准则。《世界人权宣言》第九条和《公民权利和政治权利国际公约》第九条所载禁止任意逮捕和拘留的准则，是一项根深蒂固的人权规范，在国家实践和法律意见中均得到体现。(除其他外，见国际法院，Ahmadou Sadio Diallo (几内亚共和国诉刚果民主共和国)，案情，2010 年 11 月 30 日的判决书，《2010 年国际法院案例汇编》，第 79 段；坎萨多•特林达德法官的个别意见，第 26 至 37 页，第 107 至 142 段)。
22. The Working Group reiterates that the prohibition of arbitrary detention is part and parcel of international customary law. This draws upon the established practice of human rights bodies regarding the prohibition of arbitrary detention as a norm of customary international law, authoritatively recognised as a peremptory norm of international law or jus cogens; see inter alia, the established practice of the United Nations as expressed by the Human Rights Committee in its general comment No. 29 (2001) on derogations during states of emergency (CCPR/C/21/Rev.1/Add.11, para.11). This is the approach which this Working Group follows in its Opinions. The norm contained in Articles 9 of the Universal Declaration of Human Rights and of the International Covenant on Civil and Political Rights, prohibiting arbitrary arrest and detention is a deeply entrenched human rights norm reflected in both practice and opinio juris of States (see, inter alia, International Court of Justice, Ahmadou Sadio Diallo (Republic of Guinea v. Democratic Republic of the Congo), Merits, Judgment of 30 November 2010, ICJ Reports 2010, para. 79; Separate Opinion of Judge Cançado Trindade, pp. 26-37, paras. 107-142).