The Effect of Capital Adequacy and Operational Efficiency on Financial Performance (Case Study of Bank Syariah Indonesia and Bank Muamalat for the Period 2019-2024): The Effect of Capital Adequacy and Operational Efficiency on Financial Performance. Jurnal Keuangan dan Perbankan Syariah, [S. l.], v. 4, n. 2, 2026. DOI: 10.24260/jkubs.v4i2.4572. Disponível em: https://e-journal.iainptk.ac.id/index.php/jkubs/article/view/4572. Acesso em: 19 apr. 2026.