It is certain that the book was completed before the 12th century because the last page of the manuscript has the name of high priest (Sokei, who lived during the latter half of the 12th century, one of the five priests in the Horyu-ji Temple), who seems to have owned it.
写本の所有者だったと思える高僧（相慶・法隆寺五師の一人、12世紀後半の人物）の名が末尾に記されている事から、成立年代が12世紀以前である事が確実ではある。