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The rapid development of Islamic finance has encouraged central banks in dual banking systems to design monetary instruments that comply with Sharia principles while maintaining macroeconomic stability. However, the effectiveness of Islamic monetary instruments and their transmission mechanisms remain widely debated in the literature. This study aims to systematically review the empirical and conceptual literature on Islamic monetary instruments, focusing on their effectiveness, transmission channels, and macroeconomic outcomes. Using a Systematic Literature Review (SLR) approach guided by the PRISMA framework, this research synthesizes findings from major studies examining Islamic monetary policy operations, banking transmission mechanisms, and their impacts on inflation, output, and financial stability. The results reveal that the financing/credit channel and the interest–profit pass-through mechanism are the dominant transmission pathways in dual banking systems. Although Islamic banks often demonstrate relative stability during monetary shocks, policy transmission remains partly influenced by conventional interest rate benchmarks due to institutional and market structure factors. The effectiveness of Islamic monetary instruments is largely determined by the depth of Islamic money markets, the availability of liquid instruments such as central bank sukuk, and the strength of regulatory and institutional infrastructure. Furthermore, empirical evidence linking Islamic monetary instruments directly to macroeconomic outcomes such as inflation and growth remains limited. This study proposes an integrated conceptual framework linking Islamic monetary instruments, transmission channels, and macroeconomic outcomes, moderated by institutional quality, market share of Islamic banking, and market depth. The findings contribute to the literature by providing a comprehensive synthesis of existing research and offering policy insights for strengthening Islamic monetary policy frameworks in dual financial systems.

The debate concerning the relationship between faith (īmān) and deeds (ʿamal) constitutes one of the central issues in the history of Islamic theology, generating diverse perspectives among theological schools. This study aims to comparatively analyze the epistemology of deeds in three classical Islamic theological traditions: Khawarij, Murji’ah, and Ahlussunnah. The research employs a qualitative approach using the integrative literature review method, examining classical works of ʿilm al-kalām alongside contemporary academic studies. The data were analyzed through data reduction, thematic categorization, and comparative analysis to identify differences in the epistemological frameworks used to understand the relationship between faith and deeds. The findings indicate that the Khawarij developed a textual–legalistic epistemology that considers deeds an essential component of faith, thereby viewing perpetrators of major sins as having exited the state of faith. In contrast, the Murji’ah developed a theological–rational epistemology that separates faith from deeds and postpones judgment regarding major sinners to God’s ultimate decision. Meanwhile, Ahlussunnah formulated an integrative epistemology that combines belief in the heart, verbal affirmation, and deeds within the structure of faith without declaring major sinners as unbelievers. This study highlights that differences in the concept of deeds in Islamic theology are not merely doctrinal but also reflect distinct epistemological frameworks in interpreting religious sources. The findings contribute conceptually to the study of ʿilm al-kalām by offering a comparative mapping of the epistemology of deeds across three major theological traditions in Islam.

Free trade is one of the central issues in the dynamics of the global economy, sparking debates about the extent to which the state should be involved in economic activities. Each economic system holds a different perspective on the relationship between market mechanisms and state intervention. This article aims to analyze the concept of free trade and the role of the state from the perspective of various economic systems, namely liberal, socialist, mixed, and Islamic economic systems. The research method employed is a literature review, examining relevant sources such as books, scholarly journals, and other academic references. The findings indicate that the liberal economic system tends to emphasize market freedom with minimal state involvement, whereas the socialist system positions the state as the main regulator in trade. The mixed economic system seeks to balance the roles of the market and the state, while Islamic economics permits free trade as long as it is conducted in accordance with the principles of ethics, justice, and social responsibility. This article is expected to contribute academically to a better understanding of the differing approaches of economic systems toward free trade and the role of the state in addressing global economic challenges.

Educational inequality persists across ASEAN despite improvements in enrollment and literacy, reflecting structural rather than merely access-related challenges. This study examines how governance structures, financing mechanisms, institutional capacity, and socio-economic stratification interact to produce disparities in educational access, participation, and progression. Using a qualitative-dominant mixed-methods design with cross-national comparative policy analysis, the research integrates macro-level quantitative indicators with in-depth qualitative evaluation of policy frameworks across ASEAN member states. Findings reveal that while primary enrollment approaches universality, secondary and tertiary education exhibit pronounced attrition, particularly among rural, low-income, and minority populations. Centralized governance, equitable public financing, and targeted support correlate with higher retention and reduced disparities, as evidenced in high-performing systems such as Singapore, whereas decentralized or under-resourced systems exacerbate structural inequities. Moreover, digital access and institutional capacity emerge as critical factors influencing educational trajectories. The study underscores that addressing inequality requires systemic reforms integrating governance coordination, progressive financing, institutional strengthening, and equity-focused interventions. By foregrounding structural determinants and cross-national variation, this research contributes to theoretical and policy debates on educational equity, providing evidence-based guidance for ASEAN strategies aimed at achieving inclusive, high-quality education across diverse socio-economic and geographic contexts.