2026. Green waqf as an Islamic Economic Instrument to Realize Ecological piety: A Conceptual and Empirical Study : Green waqf as an Islamic Economic Instrument to Realize Ecological piety: A Conceptual and Empirical Study . Jurnal Bimas Islam. 19, 1 (Jul. 2026), 87–118. DOI:https://doi.org/10.37302/xkxpkb52.