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As an essential component of Islamic governance for ensuring religious compliance, Shari’ah annual reports (SARs) play an important role in providing communication between Shari’ah board (SB) members and stakeholders. This paper aims to determine the ethical disclosure in SARs to identify how close the Shari’ah disclosure to the standards set by AAOIFI and also substantive morality of Islam. The research also aims to examine the factors determining disclosure performance.

Two disclosure indices are developed to generate data from the SARs: the AAOIFI standards for Shari’ah governance index for form related approach, an Islamic ethicality augmented index reflecting on substantive morality approach. The sample consists of 41 Islamic banks from 15 different countries for the period of 2007–2014. Sampled 305 SARs were examined through disclosure analysis in line with the two indices developed for this study. The econometric analysis was run to identify the factors determining disclosure performance.

The findings suggest that AAOIFI guidelines have an influence on the level of disclosure, even if Islamic banks have not adopted them. However, the level of disclosure for the ethically augmented index is found to be very limited with reliance on general statements in most of the cases. As part of determining factors, the popularity of Shari’ah scholars is significant for both indices, while the existence of an internal Shari’ah auditing department holds some explanatory power. The adoption of AAOIFI standards at the country level, the regulatory quality and the duration of Sharīʿah-compliance are particularly deterministic factors in terms of complying with AAOIFI standards for SARs.

Although SB is the most crucial division of corporate governance in Islamic banks in terms of securing the “Islamic” identity of these institutions, their most important communication instrument, namely, SAR, has not been explored sufficiently, alongside an insufficient attempt to constitute Islamic corporate governance. Initially, this study attempted to constitute an Islamic corporate governance framework as a theoretical construct, which provides context for the empirical part of the research and this should be considered a novel approach. Second, the empirical part of the research aims to fill the gap observed in the literature such as small sample size and index construction-related matters. This research is conducted with a larger sample size as compared to the available studies in the literature and it has developed two indices for disclosure analysis along with developing an Islamic morality-based index beside an index based on AAOIFI standards.

This study aims to analyze the relationship between Islamic governance (IG) and leverage and examine the interaction of corporate social responsibility disclosure (CSRD) in the relationship between IG and leverage.

This study used 444 observational data comprising Asian, European and African Islamic banks (IBs) and analyzed using the regression analysis method to answer the research hypothesis.

This study finds that IG had a significant positive effect on leverage, indicating that it can increase the leverage of IBs. In other words, IG boosts the public confidence to entrust their funds to IBs through current accounts and savings. However, this study shows that CSRD weakens the relationship between IG and leverage. In addition, this study includes the control variables of board size, Islamic supervisory board size and company size, where all three variables showed their effect on leverage. These results were obtained through additional analysis by categorizing our sample based on CSRD.

The results of this study show that IG significantly positively affects IB leverage globally. This can be used as a basis for policymakers to include the ICG variable in analyzing IBs leverage. The weakness of this study is the use of IG variables based on disclosure so that IG components that affect leverage cannot be analyzed accurately. Future research can use the IG variable by using specific IG component values such as the number of meetings, member attendance and remuneration of SSB members in analyzing IB leverage globally.

To the best of the authors’ knowledge, this research is the first study to discuss the interaction of CSRD with IG on leverage in Islamic banking in Asia, Europe and Africa, thus adding to the existing literature on Islamic banking.