The tingkeban tradition is a Javanese cultural practice related to the seven-month pregnancy ceremony as a form of prayer for the safety of mothers and unborn children. In Javanese society, tingkeban or mitoni contains symbolic meanings related to gratitude, spiritual protection, and strengthening social relationships.ยน In Maskuning Wetan Village, Pujer District, Bondowoso Regency, the tradition has a unique local characteristic through the belief that large-scale tingkeban ceremonies should be avoided because they may bring negative consequences to the mother and child. This study aims to analyze the construction of tingkeban tradition as living law, understand the inheritance process of customary beliefs, and examine the relationship between local traditions and Islamic law perspectives. This research employs an empirical legal method using legal anthropology and phenomenological approaches. Data were collected through interviews, observation, and documentation involving community elders, religious leaders, families practicing the tradition, village authorities, traditional birth attendants, and local residents. The analysis was conducted qualitatively by identifying cultural meanings and social norms developed within the community. This study demonstrates that tingkeban functions not only as a cultural ritual but also as a social norm regulating community behavior through collective acceptance. The research contributes to Islamic customary law studies by examining the interaction between local traditions, living law, and religious practices.