This study explores the motivations, positionalities, challenges, and commitments of Muslim volunteers and civil society organizations (CSOs) involved in refugee solidarity work in Indonesia. Through a qualitative approach that integrates system thinking, organizational theories, and social movement theories, the research examines how education, social circles, exposure to media discourses, and cultural and religious values, particularly Islam, shape Indonesian generosity toward refugees, reinforcing participants' motivation and commitment to this movement. Interviews with 15 participants from four CSOs reveal a complex interplay of factors influencing their involvement in refugee solidarity, including global discourse, national policy, Islamic teachings, local refugee responses, organizational structures, depth of participation, and personal conditions. The study highlights the nuanced dynamics of solidarity work, showing how participants navigate individual and communal challenges while fostering shared goals amid ongoing learning and experimentation. The findings provide a foundational framework for enhancing organizational management and sustainability within Indonesia’s refugee solidarity movement, with insights that may also be relevant to similar contexts in other countries.