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Islamic law, as the fundamental framework for Islamic bank operations, emphasizes the transparency of bank performance information to the ummah (stakeholders). This study aims to prove the effect of performance disclosure (shariah compliance, social, environmental and economic performance) on profitability, customer loyalty and cost of debt.

This study uses 23 Islamic banks in Indonesia and Malaysia observed for 15 years (2009–2023) and analyzed using panel data regression.

We report that disclosure performance negatively impacts the cost of debt. However, by testing each performance disclosure indicator, we find that disclosure of Shariah and environmental compliance performance positively impacts customer loyalty. In addition, environmental performance disclosure negatively impacts the cost of debt. In the long term, we report that customer loyalty increases in line with the expansion of shariah, social, environmental and economic compliance performance disclosures. In addition, environmental performance disclosure has a positive effect on return on assets (ROE).

This study is limited to Islamic banks in Indonesia and Malaysia, which are predominantly Muslim. Muslims are the primary market for Islamic banks and a major factor in determining Islamic bank legitimacy.

We recommend that regulators encourage banks to expand bank performance disclosure by issuing regulations and laws, such as creating rankings for Islamic banks’ disclosure performance or rewarding banks that provide broader disclosures. Thus, it will help stakeholders to access bank performance information.

The contribution of this study is to develop the concept of business sustainability through comprehensive performance disclosure, including Shariah compliance and social, environmental and economic performance.

This study aims to investigate the effect of the diversity of the board of directors (BOD) and the shariah supervisory board (SSB) on credit risk, insolvency, operations, reputation, rate of deposit return risk (RDRR) and equity-based financing risk (EBFR) of Islamic banks (IB).

The study uses 68 IBs from 19 countries covering 2009 to 2019. BOD and SSB diversity attributes data were hand-collected from the annual reports. Financial data were collected from the bankscope database. The robustness test and two-step system generalized method of moment estimation technique were used to address potential endogeneity issues.

This study provides evidence that diversity in the experience and cross-membership of board members decreases the risk. Gender diversity increases the risk, but the BOD’s education level diversity has no relationship with risk. More interestingly, influences in the experience and cross-membership of the SSB’s members positively influence risk. However, members’ education levels and gender diversity have not been proven to affect risk.

The paper recommends that Islamic banking authorities play a stronger role and make a greater effort in driving corporate governance reform. Also, determining individual characteristics of the board is a requirement to become a member of a BOD or an SSB.

This paper expands the commitment literature through the diversity of the BOD’s and the SSB’s members in terms of their education levels, experience, cross-membership and gender. This study expands the list of potential risks for IBs, by including the RDRR and EBFR.

This study aims to empirically test the influence of board member gender on insolvency risk in a two-tier system.

This study considers 91 banks operating in Indonesia from 2009 to 2021. It uses a two-step system generalized moment method to analyze the data.

This study reports that appointing women to the board of commissioners and as directors reduces the insolvency risk. Women’s role in reducing risk is more effective in listed and private-owned banks (POB) than in others.

The presence of women in boardrooms is crucial for improving financial performance and reducing financial distress in banks, particularly listed and POB. The findings of this study are expected to provide insights into board selection and appointment.

The extant literature on the impact of appointing women to boards on bank risk lacks a consensus because of differences in proxies in measuring gender diversity (GD). This paper conducts scenarios using four GD proxies, namely, dummy, percentage of women, Blau index and Shannon index, and two insolvency risk proxies.

This study aims to explain the effect of customer loyalty, financial performance and market power on Shariah compliance (SC).

This study investigates 101 fully-fledged Islamic banks (IBs) from 27 countries, and panel data regression methods were used to analyze the data. This study uses alternative empirical models and the generalized method of moment (GMM) system to address endogeneity problems.

This study finds that high profitability causes a decrease in SC. High levels of competition cause the IBs to make policies to increase their SC. However, the effect of competition on SC depends on the ownership status of the IBs – high levels of competition cause unlisted IBs to increase their SC. However, for listed IBs, severe competition weakens their SC.

This study focuses on interest-free IB deposit products as SC indicators.

This paper suggests regulators should control the IBs’ competition to increase the level of competition among IBs and conventional banks to increase the SC.

This study develops two SC indicators that focus on the relationship between the rate of return for investment account holders (RRIAH) and the interest rate (IR): the difference between the IR and the RRIAH and the elasticity of the RRIAH with the IR.

Literature on the board diversity of Islamic banks (IB) found limited knowledge of the “deep-level” attribute. This study aims to explain the impact of the board diversity attributes (education levels, educational backgrounds and the interactions between these two attributes of diversity) on profitability.

The research sample is 37 fully flagged IBs from five Southeast Asian countries, covering nine years (2010–2019). Data were analyzed using the two-step system generalized moment (2SYS-GMM) method.

We found that the cognitive conflict between the board of directors (BOD) and the Shariah Supervisory Board (SSB), which has heterogeneity in its education level and educational background, positively affects profitability. These results reinforce the resources dependence theory (RDT) approach that having boards with heterogeneous characteristics is beneficial for IB.

The findings of this study would offer useful information for Islamic banking authorities to revise or formulate rules and guidelines and make a greater effort to implement corporate governance (CG) reform measures by determining educational level and background as a requirement to become a member of a BOD or an SSB.

This paper contributes in three ways: (1) we use the “deep-level” diversity attributes of the BOD and the SSB, (2) it focuses on cognitive conflict in boards by presenting the expertise diversity of the BOD and SSB and (3) we interact with the level of education to evaluate the effect of a cognitive conflict.

The purpose of this paper is to provide a systematic literature review on Shariah governance and Islamic banks.

The literature was searched from Scopus and Web of Science using various queries related to Shariah governance and Islamic banks. Through a screening process, 93 articles were considered fit for the systematic literature review.

The paper provides a systematic review based on different themes, including measurement of Shariah governance in Islamic banks, disclosure of Shariah governance and its determinants, the impact of Shariah governance on performance, risk management and other outcomes of Islamic banks. Finally, issues and challenges of Shariah governance in Islamic banks are discussed, followed by conclusions and recommendations related to future research.

This study is the first of its kind, to the authors’ knowledge, to provide a comprehensive systematic literature on Shariah governance and Islamic banks by exploring different themes and highlighting multiple future avenues of research.

This paper aims to investigate the impact of sharia governance on organizational performance in zakat management institutions in Indonesia over the period 2017–2021.

This study examined 33 zakat management organizations in Indonesia from 2017 through 2021 for 151 observations. Gross allocation ratio and growth of ZIS collection are used as organizational performance measures. The independent variables in this study are board of director size, educational background of the board of directors, sharia supervisory board size, sharia supervisory expertise, supervisory size and management size. Also, the study uses size, age and audit opinion as control variables to help measure the relationship between sharia governance and organizational performance.

This study shows that the board of directors and supervisory size positively and significantly affect organizational performance. Then, the educational background of board of directors has a negative and significant effect on organizational performance. In Model 1, sharia supervisory board size has a positive and significant effect on organizational performance, but in Model 2, sharia supervisory board size does not. Meanwhile, sharia supervisory expertise and management board size do not affect organizational performance.

The findings in this study illustrate the importance of transparency in the zakat management organization. Transparency helps minimize conflicts of interest and information asymmetry in the zakat management organization. In addition, sharia governance mechanism helps regulators and top management to make effective policies to improve and enhance organizational performance.

Sharia governance is essential for zakat management organizations to increase accountability, credibility and public trust and support the practice of zakat management organizations.

This study discusses sharia governance and organizational performance in socioreligious organizations, especially zakat management organizations, which are still rarely carried out. Thus, this study broadens the insights of sharia governance and highlights the importance of performance appraisal in zakat management organizations.

This study aims to investigate the relationship between Islamic governance and the social performance of Islamic banks, pioneering a new aspect in terms of the impact of the National Shariah Board (NSB) on the social performance of Islamic banks. The essential body in the Islamic banks in charge of Islamic governance is the Shariah Supervisory Board (SSB). Therefore, in this study, the authors explore how the characteristics of the Shariah board and Islamic governance mechanisms influence the social performance of Islamic banks.

Panel data methods are applied to the annual data of 43 banks from 14 countries over the period 2012–2018 to explore the impact of Islamic governance on Islamic banks’ social performance. The authors have used all available bank annual reports in the given period. Social performance is measured by Maqasid al-Shariah (in terms of the goals of the Islamic moral economy) index using a comprehensive evaluation framework. Islamic governance is represented by the improved Islamic Governance Score (IG-Score) index, which measures the quality of Islamic governance in Islamic banks. In the research, the authors also introduce the frequency of SSB meetings in IG-Score.

The findings suggest a strong link between Islamic governance and the social performance of Islamic banks, illustrating the importance of the Shariah board in achieving maqasid. On the other hand, the research discovered that NSBs are inefficient and the existence of NSB can jeopardize the social performance of Islamic banks. The results of this research imply valuable recommendations for Islamic banks that are keen to improve their social performance.

Besides investigating the impact of SSB governance on the social performance of Islamic banks by using an improved IG score index, to the best of the authors’ knowledge, this is the first study that investigates the impact of NSBs on the social performance of Islamic banks.

This study aims to investigate the extent to which the characteristics of Sharia supervisory boards (SSB) in banking institutions impact the disclosure of information pertaining to green banking practices.

A comprehensive dynamic panel data analysis approach was applied to a data set comprising Islamic banks from 15 countries in the Middle East and North Africa (MENA) region, covering the period from 2012 to 2022. In addition, a series of robustness and endogeneity analyses were conducted to ensure the consistency of the main findings.

This study shows that the characteristics of the SSB significantly impact the green banking disclosure practices of Islamic banks. Specifically, the proportion of board members who hold multiple SSB positions and the presence of foreign board members exhibit a negative and significant effect on green banking disclosure. Conversely, the size of the SSB is positively and significantly associated with green banking disclosure. Thus, the extent of green banking disclosure in Islamic banks is likely to increase with the size of the SSB. However, an increase in board members’ external commitments and a higher proportion of foreign board members are associated with a decline in green banking disclosure. Further analysis supports these findings, confirming their consistency across different contexts.

The findings of this study highlight the critical role that the composition and characteristics of the SSB play in shaping the green banking practices of Islamic banks in MENA countries. These insights provide valuable guidance for policymakers and Islamic financial institutions aiming to strengthen sustainability practices while adhering to Shariah principles. As green banking becomes increasingly crucial in the global financial landscape, optimizing the SSB’s composition could be a key driver in advancing the environmental goals of Islamic banking in the MENA region.

Islamic banks in the MENA region should focus on optimizing their SSB composition to enhance green banking disclosure. Increasing the size of the SSB can positively influence disclosure practices. However, banks should manage board members’ external engagements to ensure they have sufficient focus on green initiatives. Strategic recruitment of foreign members with a commitment to sustainability, coupled with targeted training programs, can further improve disclosure.

Specific SSB characteristics such as size and foreign board members influence disclosure of green banking, which previous studies did not conduct research on.

This study aims to identify the significant scientific actors, reveal the intellectual structure and explore essential features for future research direction in Sharia governance studies.

The study applies a hybrid review combining bibliometric analysis and content analysis. It uses Rstudio (biblioshiny), VOSviewer and Microsoft Excel to analyze 457 articles published in 206 journals indexed by Scopus and/or Web of Science during the period of 1985 until the end of 2022.

The paper discovered four distinct streams of Sharia governance studies: structure of Sharia governance, Sharia governance and risk management, Sharia governance and sustainability and the effect of Sharia governance toward firm’s financial performance. Furthermore, it derives and summarizes 26 main research questions for future studies.

In terms of theoretical implications, the finding contributes to the general literature on Sharia governance by conducting bibliometric analysis and content analysis. In terms of practical implications, this study suggests that Sharia governance should be strengthened by the management of Islamic banks and other Islamic-based businesses.

To the best of the authors’ knowledge, this study is among the early studies using a hybrid review on the topic of Sharia governance, allowing future researchers in this field to capture the trends and progress of current literature as well as the research gaps to be filled in by future researchers.