Shi`i hagiographical and Sunni historical traditions devote considerable attention to the special father-daughter relationship between the Prophet Muhammad and his daughter Fatimah, yet much less attention is dedicated to Fatimah’s peculiar kunya umm abiha, “the mother of her father.” Muslims often explain this matronym to mean that Fatimah was exceptionally nurturing toward her father. Certainly, we can find ample evidence of the mutual affection between Fatimah and the Prophet Muhammad. In one hadith, the Prophet declares: “Fatimah is part of me, the light of my eye, and the fruit of my heart. Whatever hurts her hurts me, and whatever pleases her pleases me” (Ibn-e Babawayh, Amali, p. 437). These are the words of paternal love, yet in this paper, I suggest Fatimah’s kunya carries far greater significance. It can be interpreted to mean that she is the mother of prophecy itself. As such, it is but one expression of the unique role occupied by Fatimah, a role that at times accords her a status equal or even superior to that of her father. Drawing upon ethnographic field research in Iran and India, and textual materials both theological and hagiographical, this paper will explore three aspects of Fatimah’s transcendent, eschatological role as conceptualized in Shi`i thought and how they relate to her unique relationship with her father. In particular, this study will reveal how these portrayals of Fatimah serve as an effective counter to notions of the ordinary patriarchal dynamic of female subordination. In this prototypical father-daughter relationship of Islam, Fatimah both reflects the Muhammadan light and sometimes appears as its generator. In other instances, a profound identification exists between her and the Prophet, causing them to appear as one. Fatimah’s divine radiance, combined with the public recognition of her spiritual exemplariness, elevates her beyond her typical subordinate status in patriarchal society. The third feature of Fatimah’s spiritual power is manifested in her eschatological role as al-Mansurah. On the Day of Judgment, Fatimah will intercede on behalf of those who are loyal and weep for her family, and punishing those who displease her. Fatimah al-Zahra constitutes a human form of Divine will exhibited through her embodiment of walayah (transcendent sanctity) and she is made human and real through her enactment of wilayah (socially sanctioned sanctity)—she is the Mistress of the Two Worlds and, thus, the mother of her father.