Abdussalam A, Abas S, Anggraini R, Putri LA. Optimizing Cash Waqf Investment through Asset Diversification and Nazhir Capacity Building: A Case Study of the Muhammadiyah Cash Waqf Board in West Sumatra. AL-IMAM J. Islam. Stud. Civiliz. Learn. Soc. 2026;7(2):661-672. doi:10.58764/j.im.2026.7.209