This research discusses the success of the Islamic community in the Majelis Tarbiyah (MTb) in improving the economic welfare of the members. The focus of this research is on the impact of religion and autocratic leadership in intensifying economic activities and creating high discipline and piety. MTb is seen by the broader community as exclusive because it regards Muslims who have not taken the pledge to the Majelis as merely ‘nonprocedural’, not true, Muslims. It is not enough for a Muslim to perform prayers, zakat, fasting, and other Shari’a requirements; they are only a proper Muslim when they have implemented the Shari'a shahada, the consensus of the Islamic faith. The exclusivism of MTb is important to improving the financial security of its members but it also gives rise to mistrust and resentment within the broader Muslim community. The results of this study indicate that the MTb is more successful in its economy because it creates a system of the strict discipline of religious rules. Key elements of this are the pledge, strong leadership, religious commitment, concrete economic programs. The results also show that autocratic leadership contributes to improving the spiritual, psychological, and economic conditions of the MTb community. The motivation of the community to join the MTb community is due to economic advancement, even though they have to sacrifice individuals and social rights to carry out the established programs and adhere to the leader.