The moral crisis, the weakening of students’ character, and the trend toward the commercialization of education in the modern era call for a reconstruction of Islamic educational values grounded in ethics and spirituality. The classical work Adabul Mu’allimin, written by Ibn Sahnun, is regarded as a fundamental reference because it is an early text that systematically discusses teacher-student ethics and remains relevant to contemporary educational issues. This study aims to conduct an in-depth analysis of the concept of Islamic education according to Ibn Sahnun, covering the role and responsibilities of a teacher, the structure of the pedagogical relationship between teacher and student, and the relevance of his ideas in addressing contemporary educational challenges. The research method employed a qualitative approach through a literature review that utilized primary sources namely, the works of Ibn Sahnun and was supplemented by an analysis of relevant secondary literature. The results of the study indicate that Ibn Sahnun regarded adab as the primary foundation of the educational process, emphasized the importance of the unity between knowledge and ethics, and positioned the teacher as a prophetic figure responsible for shaping students’ character, morality, and spiritual maturity. These ideas have proven to be highly relevant in strengthening character education, developing professional ethics among teachers, and revitalizing pedagogical relationships that are more humanistic and oriented toward the formation of the insān kāmil within the context of modern education.