<![CDATA[This study aims to analyze the role of participatory da'wah (Islamic outreach) based on the majelis taklim (Islamic study groups) as a catalyst for social transformation of Muslim families in Mandailing Natal Regency. The study used a qualitative approach with a multiple case study design. Data were collected through participant observation, in-depth interviews, and documentation studies at several active majelis taklim (Islamic study groups). Data were then analyzed using thematic and cross-case analysis. The results show that the majelis taklim developed a participatory da'wah model through da'wah bil-lisan (oral da'wah), da'wah bil-hal (oral da'wah), family economic empowerment programs, and the use of digital media. Active member participation was a key factor in the program's success. The resulting social transformation encompassed religious dimensions, family education, and family economics. A total of 91.2% of respondents experienced an increase in the quality of family worship, 78.6% experienced changes in parenting patterns to be more Islamic, and 64.3% experienced economic improvements through skills and entrepreneurship programs. This success was supported by strong social capital, support from religious and traditional leaders, and the cultural values of Dalihan Na Tolu. This research produces the concept of Community-Based Participatory Da'wah (DPBK) as a da'wah model that integrates Islamic values, community empowerment, social capital, and local wisdom in encouraging social transformation of Muslim families.]]>
