Religious phenomenology, as a major contemporary analytical approach, has opened new horizons in religious studies by focusing on “lived experience” and “the mode of manifestation of the sacred in the believer’s consciousness.” This article employs conceptual analysis and philosophical reasoning to examine the capacities and limitations of the phenomenological method in Islamic lifestyle studies. Its central research question is: what relationship does religious phenomenology bear to the method of ijtihad (juridical reasoning) in the study of Islamic lifestyle? The findings show that religious phenomenology – through its emphasis on “lived experience,” “epoché,” and “analysis of the mode of manifestation” – makes it possible to bridge the sacred text and the everyday life of believers. However, this method alone lacks both religious authority and epistemological validity in deriving normative religious precepts. Furthermore, the principle of “epoché” fundamentally conflicts with the commitment to revelation, which is the basic presupposition of any Islamic religious research. Without the supervision of revelation and demonstrative reason, this method risks falling into semantic relativism. Finally, the article proposes a “Guided Phenomenology” model, an approach in which lived experience is interpreted in the light of revelation and phenomenology plays a complementary role alongside ijtihad.