<![CDATA[The study of the book Adabul 'Alim wal Muta'alim by KH. Hasyim Asy'ari constitutes one of the most vital pillars of the salaf Islamic boarding school educational system, particularly in shaping the ethical formation of santri (students). Amid the growing wave of modernization that erodes traditional values of adab (proper conduct) among younger generations, the empirical relevance of this classical text demands systematic scholarly attention. This study aims to: (1) describe the implementation of the Adabul 'Alim wal Muta'alim book study at Salaf Paculgowang Islamic Boarding School, Diwek, Jombang; (2) analyze the implementation of its embedded ethical values in the formation of santri ethics; and (3) identify the supporting and inhibiting factors in this process. The research employs a qualitative descriptive approach, with data collected through participatory observation, in-depth interviews, and documentation. Data analysis followed the Miles and Huberman model data reduction, data display, and conclusion drawing validated by source and technique triangulation. Findings reveal: first, the book study is conducted routinely through bandongan and sorogan methods, hallmark traditions of salaf pesantren; second, the implementation of ethical values is realized through three primary channels exemplary conduct (uswah hasanah) of the kiai and ustaz, daily habituation (ta'wid), and enforcement of pesantren regulations collectively forming ethical dispositions including respect for teachers, discipline, responsibility, sincerity in learning, and courteous behavior; third, supporting factors include educators' exemplary roles and the religious pesantren environment, while inhibiting factors include modernization influences, disparate student awareness, and limited instructional time.]]>
