Fiqh muamalah literacy is essential for helping communities understand and apply Islamic legal principles in their daily economic activities, particularly in floating net cage (KJA) fisheries. This community engagement program aimed to strengthen fiqh muamalah literacy among residents of Sungai Arfat Village, Karang Intan District, Banjar Regency, focusing on contracts, sale and purchase, riba, gharar, and the values of honesty, trustworthiness, and transparency in economic transactions. The activity was conducted on May 5, 2026, at the Sungai Arfat Village Hall and involved 20 participants, comprising 12 men and 8 women. The program employed a Participatory Action Research (PAR) approach through problem identification, planning, educational sessions, discussions and case studies, evaluation, and reflection. Qualitative evaluation was conducted through discussions and question-and-answer sessions following the educational activities, focusing on participants’ understanding of contractual arrangements, sale and purchase, qardh (loans), riba, gharar, mutual consent, and transaction ethics. The evaluation findings indicated that case-based discussions helped participants identify key aspects of fisheries-related transactions, including clarity of the transaction object and price, agreement between the parties, payment arrangements, fulfillment of rights and obligations, and accountability in transactions. Cases involving feed purchases with deferred payment and fish sales based on post-harvest weight were used to explain differences between transaction types and the potential for riba and gharar when contractual terms are unclear. These findings suggest that context-based education can support the development of fiqh muamalah understanding relevant to the community’s economic activities. However, because the evaluation did not include quantitative measurements, the extent of improvement in participants’ literacy cannot be expressed as a percentage. The program is expected to provide a foundation for continued assistance in promoting clearer, fairer, more transparent, and Sharia-compliant economic transactions