This study examines the role of Islamic-based social capital in supporting the economic recovery of Micro, Small, and Medium Enterprises (MSMEs) affected by the November 2025 flood disaster in Langkat Regency, North Sumatra. The flood, which struck the region from November 26, 2025, became one of the most destructive hydrological disasters in the area’s recorded history, with Tanjung Pura District as the most severely impacted area (18,629 households). The study employs a qualitative approach with a case study design, involving informants from MSME actors in trade, agriculture, and fisheries sectors in Tanjung Pura District who met specific selection criteria. Findings reveal three main Islamic social capital mechanisms operative in recovery: (1) mobilization of zakat, infaq, and shadaqah (ZIS) as a responsive resource redistribution instrument; (2) silaturahmi networks facilitating informal capital transfer and business information exchange; and (3) amanah values functioning as a substitute for formal collateral. These findings carry policy implications for integrating mosque institutions and BAZNAS into the regional disaster management system.
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