KONSTRUKSI SOSIAL HISAB ABJADIYYAH SEBAGAI ALAT VALIDASI PERKAWINAN (STUDI KASUS DI DESA KERTAHARJA, KABUPATEN TEGAL)NIM.: 24203011045Dannizar Azka Taftazani ArsalauthorThe practice of hisab abjadiyyah calculation is a calculation method based on Arabic letters, in which each letter possesses a specific numerical value that is subsequently processed to assess the compatibility of prospective couples or to determine the auspiciousness of a marriage. This phenomenon is found in Kertaharja Village, Kramat District, Tegal Regency, where the majority of the community still considers the results of hisab abjadiyyah calculations as the primary basis for granting approval or rejecting a marriage. In this context, hisab abjadiyyah does not function as a determinant of the legal validity of marriage; rather, it serves as a tool for validating marriage within the social order. Based on this phenomenon, it becomes highly relevant to examine the community’s beliefs regarding the practice of hisab abjadiyyah as a marriage validation tool, as well as to further analyze the social construction that has developed within society toward this practice. This study employs a field research method with a descriptive-analytical approach. The research adopts a sociological perspective, while the data collection techniques consist of observation, interviews, and documentation relevant to the study. The data analysis process includes data reduction, data presentation, and conclusion drawing. The analysis is conducted using Max Weber’s theory of social action as well as the social construction theory of Peter L. Berger and Thomas Luckmann. The findings of this study indicate that the beliefs of the people of Kertaharja Village toward the practice of hisab abjadiyyah as a marriage validation tool are grounded in the level of individual religiosity, accompanied by psychological and social considerations that are strategic in nature to achieve a sakinah, mawaddah, warahmah household. From Max Weber’s perspective, this tradition can be categorized as value-rational action, affective action, and traditional action. The community’s acceptance of hisab abjadiyyah as a marriage validation tool represents a form of new social construction that emerged from the intersection of changes in community religiosity, the authority of religious leaders, and the social needs of society in seeking legitimacy for marriage. When analyzed using social construction theory, the practice of hisab abjadiyyah constitutes a social construction that has become deeply embedded within society through the processes of externalization, objectification, and internalization.346.01 Hukum Keluarga - Hukum Pernikahan2026-05-08UIN SUNAN KALIJAGA YOGYAKARTA;FAKULTAS SYARIAH DAN HUKUMThesis