This text belongs to a set of scriptures known as Kôfukuji Eion gukyô (the “Sutras Collected by Eion of Kôfuku-ji”). It was named after Priest Eion, the custodian of the sutra repository at Kôfuku-ji Temple, who collected this set of the Great Wisdom Sutra (Skt., Mahaprajnaparamita Sutra; J., Daihannyaharamittakyô), which were transcribed from the Tenpyô era (729-49) to the early Heian period (794-1185), in 1233 (Jôei 2). Annotations in red (indicating punctuation and pronunciation) and black (for the Japanese pronunciation of the Chinese characters) were added during the Kamakura period (1185-1333) to aid in the reading of this sutra. The postscript in this volume provides the name of its copyist, “Ukyô Shichijô Nibô Kimimaro,” and a date of 730 (Tenpyô 2).