The purpose of this study is to analyze the effect of mudharabah financing and brand image partially and simultaneously on customer satisfaction at Commercial Islamic Banks. This type of research is classified as associative. The population and sample in this study were 92 respondents with a sampling technique using an accidental sampling approach. The results showed that both partially and simultaneously mudharabah and brand image had a positive and significant effect on customer satisfaction at Commercial Islamic Banks. Mudharabah financing variable has a greater influence than brand image in influencing customer satisfaction at Commercial Islamic Banks.

The specific purpose of this study is to determine the effect of Financing and Third Party Funds on the Total Assets of Islamic People's Financing Banks. The approach used in this research is a quantitative approach. The data used in the form of secondary data from the website of the Financial Services Authority (OJK). The population is monthly data from January 2016 to December 2020 period while the sample is annual data from 2016 to 2020. The research analysis carried out is multiple linear regression, classical assumption test (normality test, heteroscedasticity multicollinearity test and autocorrelation test), and test statistics (coefficient of determination (R2), statistical F test, and statistical t test). The results of this study are the variables of Financing and Third Party Funds have a significant effect simultaneously (simultaneously) on the variable Total Assets of Islamic People's Financing Banks.

The main focus of this study is to analyze the effect of both partial and simultaneous third party funds and return on assets on mudharabah financing at Islamic Commercial Banks. The approach used in this study is a quantitative approach, because the data measurement uses a numerical scale (numbers). The population and sample in this study are the financial statements of Islamic Commercial Banks containing third party funds, return on assets and mudharabah financing. The years 2016 to 2019 were chosen as the sample for this study. The results showed that partially only third party funds had a positive and significant effect on mudharabah financing, while return on assets had no effect. Then simultaneously the two variables of third party funds and return on assets have a positive and significant effect on mudharabah financing at Islamic Commercial Banks.

The specific purpose of this study is to determine the factors that affect the return for the results of Islamic Bank deposits. The approach used in this research is a quantitative approach. The data used in the form of secondary data in the form of time series originating from the website of the Financial Services Authority (OJK) with the link www.ojk.go.id regarding the amount of return for mudharabah deposit results, Capital Adequacy Ratio, Non Performing Financing, Financing to Deposit Ratio and Inflation originating from the website of Bank Indonesia (BI) with the link www.bi.go.id. The population is monthly data from January 2016 to December 2019 period while the sample is annual data from 2016 to 2019. The research analysis conducted is multiple linear regression, classical assumption test (normality test, heteroscedasticity multicollinearity test and autocorrelation test), and test statistics (coefficient of determination (R2), statistical F test, and statistical t test). The results of this study are the variables of Capital Adequacy Ratio, Non-Performing Financing, Financing to Deposit Ratio and Inflation have a significant effect simultaneously (simultaneously) on the variable of Profit Sharing for Mudharabah Deposits for Islamic Commercial Banks.

Tujuan khusus penelitian ini yaitu untuk mengetahui pengaruh Capital Adequacy Ratio, dan Non Performing  Financing terhadap return bagi hasil deposito Bank Umum Syariah. Pendekatan yang dilakukan dalam penelitian ini adalah pendekatan kuantitatif. Data yang digunakan berupa data sekunder yang berbentuk time series yang berasal dari website Otoritas Jasa Keuangan (OJK). Populasinya adalah data bulanan  dari bulan Januari 2016 sampai periode Desember 2019 sedangkan sampelnya adalah data tahunan dari tahun 2016 sampai tahun 2019. Analisis penelitian yang dilakukan yaitu regresi linier berganda, uji asumsi klasik (uji normalitas, uji multikolinearitas heteroskedastisitas dan uji autokorelasi), dan uji statistik (koefisien determinasi (R2), uji F statistik, dan uji t statistik). Hasil penelitian ini adalah maka variabel capital adequacy ratio dan non performing financing berpengaruh signifikan secara bersama-sama (simultan) terhadap variabel return bagi hasil deposito mudharabah Bank Umum Syariah.