A collection of the long-unavailable tafasir, or commentaries on the Qur'an, which help to properly explain and contextualize the revelation, this series aims to make leading exegetical works—in translation, unabridged, and faithful to the letter and meaning of the Arabic—widely available for study and research. The earliest surviving Sufi commentary on the Qur'an, this record is not only one of the few authenticated works in Tustari's name but is also a key source for understanding the mystical thought and teachings of this important and influential Sufi. In addition to insights into the spiritual significance of almost 1,000 verses of the Qur'an, this commentary, presented in complete English translation for the first time, includes numerous references to traditions of the Prophet, explanations of the ethical and mystical dimensions of the religious life, stories of the prophets, and anecdotes about earlier mystics. Generously augmented with explanatory footnotes throughout, the book will provide readers with an invaluable introduction to the Sufi tradition of Qur'anic interpretation and acquaint them with spiritual doctrines fundamental to the later development of Sufism.