Introduction
The Malaysian legal system is a pluralistic one, drawing from various sources. These sources are broadly divided into written laws, such as the Federal Constitution and legislation, and unwritten laws, which include English common law, judicial precedent, and customary law. This essay will argue that customary law, despite its diminishing influence in the face of statutory law, remains a relevant and important source of law in Malaysia. Its relevance is most clearly seen in specific areas such as family matters and land rights, particularly concerning the Malay community and the indigenous peoples of Sabah and Sarawak. However, its overall application is limited and its position is secondary to written law.
The Scope of Customary Law in Malaysia
Customary law in Malaysia is not a single, uniform body of rules. Instead, it comprises the distinct customs and traditions of different communities that have been accepted as legally binding. The main categories include Malay adat law, Chinese and Hindu customary law, and the native customary laws of Sabah and Sarawak (Harding, 2017).
Malay adat is itself divided into adat perpatih, a matrilineal system found predominantly in Negeri Sembilan, and adat temenggong, a patrilineal system that applies in other Peninsular states. These customs traditionally govern matters of land inheritance and family law. Chinese and Hindu customary laws were historically applied to the respective communities, particularly concerning marriage, divorce, and inheritance. Finally, the native customary laws of Sabah and Sarawak are a complex and diverse set of rules governing the lives of the various indigenous communities, with a strong emphasis on rights to land, known as Native Customary Rights (NCR).
The Legal Position and Recognition of Customary Law
Customary law is formally recognised as a source of law in Malaysia. Article 160 of the Federal Constitution defines ‘law’ to include “custom or usage having the force of law”. This constitutional acknowledgement provides the basis for courts to apply customary law. For a custom to be recognised by the courts, it must be proven to be certain, consistent, and accepted as binding by the community to which it applies (Wan Arfah, 2009).
Historically, courts have given judicial notice to customs that are well-established. For instance, in Ramah v Laton [1927] 6 FMSLR 128, the court recognised Malay custom concerning the joint acquisition of property during a marriage. More recently, the courts have been instrumental in upholding the native customary laws of Sabah and Sarawak. The landmark case of Adong bin Kuwau v Kerajaan Negeri Johor [1997] 1 MLJ 418 affirmed that the aboriginal peoples of Peninsular Malaysia have a common law right to their customary lands. These cases demonstrate that the judiciary continues to see custom as a valid source of legal rights.
The Continuing Relevance and Limitations
The main area where customary law remains highly relevant is in personal law and land matters for specific communities. For Muslims, Malay adat continues to supplement Islamic law in areas like the inheritance of ancestral property in Negeri Sembilan. For the indigenous peoples of East Malaysia, Native Courts are established to hear cases concerning breaches of native customary law, and the superior courts frequently deal with complex claims over Native Customary Rights land.
However, the influence of customary law has been significantly curtailed by statutory law. A key principle of the Malaysian legal system is that written law prevails over any inconsistent unwritten law. The most significant example of this is the Law Reform (Marriage and Divorce) Act 1976, which codified the law for non-Muslims and effectively replaced most Chinese and Hindu customary laws relating to marriage and divorce. Similarly, statutes governing land, such as the National Land Code 1965, have limited the application of adat land tenure outside of designated customary land areas. Therefore, while custom is relevant, its application is confined to the specific areas not already covered by legislation.
Conclusion
In conclusion, customary law is undeniably a relevant source of law in modern Malaysia, but its scope is limited. Its constitutional recognition and application by the courts in matters of family law and native land rights confirm its status as more than just a historical artefact. It continues to govern important aspects of life for many communities, especially Malay and indigenous groups. Nevertheless, its role has been restricted by the expansion of statutory law. Customary law now operates within the boundaries set by Parliament and the Constitution, filling gaps where legislation is silent but yielding to it where there is a conflict. Thus, its relevance persists within a legal landscape increasingly dominated by written laws.
References
- Harding, A. (2017) An Introduction to the Constitution of Malaysia. 4th edn. Hart Publishing.
- Adong bin Kuwau & Ors v Kerajaan Negeri Johor & Anor [1997] 1 MLJ 418.
- Federal Constitution of Malaysia.
- Law Reform (Marriage and Divorce) Act 1976.
- Ramah v Laton [1927] 6 FMSLR 128.
- Wan Arfah Hamzah. (2009) A First Look at the Malaysian Legal System. Oxford University Press.


