This study, by extending the theory of “narrative prosthesis” and introducing the innovative concept of “prosthetic time,” undertakes a comparative analysis of the allegory of “The Candle and the Butterfly” in Saadi’s Bustan and Bidel Dehlavi’s Masnavi Bahr al-Muhit. The central question of the research is how time in classical mystical narratives—particularly in the works of Saadi and Bidel—transcends the functional, linear, and deterministic levels, and through processes of tension, contraction, and expansion, as well as the substitution of prosthesis, transforms into a temporal mode that is experiential, qualitative, and presential, acquiring a transcendental and evental dimension. The aim of the study is to explore the mechanisms by which time, as prosthesis, enables the “compression of spiritual journey,” the “extension of the moment of union,” the “shifting of roles,” and the “expansion of experiential scale.” The findings reveal that Saadi, by compressing the path and linking the “moment of union” to ethical and pedagogical teachings, reconfigures prosthetic time toward mystical discipline and meditation; whereas Bidel, through multilayered simultaneities and the elevation of experience to a cosmic scale, transforms prosthetic time into an instrument of ontological insight. Thus, in these narratives, time functions not merely as the container of events but as a prosthesis—one that re‑arranges the mystical horizon of narrative and opens the possibility of pure experiential presence. This creative re‑engineering of time offers a new horizon for the convergence of modern narratology and Persian mysticism.