Ethical Conditionality and Investment Protection in Muslim-Majority Southeast Asian States:

Shari’ah Compliance, Halal Governance and Transnational Islamic Legal Ordering

Nguyen Huu Khanh Linh

Nguyen Thi Hong Trinh

Bui Thi Quynh Trang

Phan Dinh Nguyen

 

Abstract: This article examines how Shari’ah compliance and halal (permissible) governance operate as investment-relevant market conditions in Muslim-majority Southeast Asian states. It argues that Malaysia, Indonesia and Brunei Darussalam do not create a unified Islamic investment regime, but reveal a broader process of ethical conditionality through which Islamic legal norms are translated into certification, capital-market screening, product circulation, supply-chain assurance and regulatory trust. The analysis proceeds comparatively. It first develops the concept of ethical conditionality and distinguishes it from ordinary regulatory compliance, public morality and Environmental, Social and Governance standards. It then examines Malaysia’s product-to-capital-market linkage, Indonesia’s territorial halal assurance system and Brunei’s state-centred Shari’ah governance, before assessing their interaction with the ASEAN Comprehensive Investment Agreement. The article finds that Islamic ethical regulation does not structurally conflict with regional investment protection. Its legal significance lies in the managed tension between investor rights and religiously informed regulatory space. Investment protection should therefore discipline arbitrariness, opacity and discrimination without displacing legitimate halal or Shari’ah-based regulation.