ABSTRACT This thesis proves that superiority and power among the Alwi and Ba'alawi communities have distorted the principles of Syari’ah. This is indicated by the existence of endogamous marriage practices that have been carried out for a long time by this group. Basically this kind of marriage is not related to Islamic Syari’ah Endogamy practices are carried out under the pretext of guarding the bloodline of the Prophet Muhammad. Endogamy marriage among Syarifah believes that this marriage is the only way to guard the bloodline of the Prophet Muhammad. Therefore, there is a special burden of responsibility for Syarifah to carry out endogamy marriage to date. This thesis shows that the practice of endogamy marriage for Syarifah in Arabian Village Kademangan Village is an implementation of adherence to the system and religious values. This type of research is a type of qualitative research, therefore the researcher conducted a study of group culture in natural conditions. The primary data used is in the form of observation and interviews. While secondary or supporting data are literature related to the problem under study. The approach used in this research is legal sociology. Keywords: Endogamy, Syarifah, Sociologist, Maqashid Syari'ah