In the Indian Sub-Continent, such great mystic figures as Sharafoddin have, in the course of history, contributed to the promotion of public - awareness and public's conversion to the holy religion of Islam. The combination of Islamic mysticism and Persian language in India provides the rationale for conducting more research and discussion regarding the values and significance of Persian literary works produced in that region, as well as the urgency for revival of the samevalues. The "Makatib- e - Sadi" or "Maktoubat" (One Hundred Writings) by Sharafoddin constitutes one such invaluable mystical works which is written eloquently and scholarly and dedicated to his followers. This issue points out the expansion of Islamic mysticism throughout that region, as supported by the existing works, and serves as an indication that the Persian language was spoken widely not only in large cities, but also in remote districts within the Indian Sub-Continent. Further, the preaching - sessions, literary and mystical circles as well as unofficial and official correspondences were all delivered in the eloquent Persian language. Although more research is required to address both literary and religious concerns of "Maktoubat (Makatib-e Sadi)", the present article exclusively provides ab abridged biography and literary works of Sharafoddin and analyzes the content of the "Maktoubat" through presenting revealing samples of his writings.