2026. Leveraging Waqf and Endowment for Sustainable Pesantren Development in Sumatra: Evidence from Pondok Modern Cahaya Al-Qur’an (PMCA) and the Emerging Productive Pesantren Ecosystem in Dumai, Indonesia. Proceeding of International Conference on Pesantren (ICOP). 3, 1 (Sep. 2026). DOI:https://doi.org/10.61159/91rt5q64.