略論一卷傳本《大梵天王問佛決疑經》的成立: 以〈六大品〉為中心=A Brief Discussion on the Formation of Dialogue of the Buddha and Mahābrāhmaṇa deva rāja: Centering on the “Six Great Elements”=一巻伝本『大梵天王問仏決疑経』の成立について ─「六大品」を中心として─
《大梵天王問佛決疑經》=The Dialogue of the Buddha and Mahābrāhmaṇa deva rāja=『大梵天王問仏決疑経』; 六大=Six Great Elements; 覺鑁=Kakuban=覚鑁; 《五輪九字明秘密釋》=The Secret Illumination on the Five Cakras and the Nine Syllables=『五輪九字明秘密釈』
For centuries the Dialogue of the Buddha and Mahābrāhmaṇa devarāja was considered a source of Zen, however in the twentieth century it was viewed as an ancient apocrypha in modern Japan academic circles.The Japanese scholar Nukariya Kaiten(1867-1934) especially clarified in detail that the two-volume version was an apocrypha made by some Japanese Buddhists. Another one-volume version, which was one century late than the two-volume version, was also indicated as a Japanese Buddhist apocrypha by the systematic thesis of Ishil Shudou (1943- ) who also belonged to Caodong School. This paper may seem like an overstuffed redundancy, yet further it is to point out the thought and background of the apocrypha author that was not mentioned in Ishil‟s thesis which only explained the related component of mikkyō. It is agreed that the Dialogue of the Buddha and Mahābrāhmaṇa deva rāja an apocrypha; nevertheless, this paper investigates the apocrypha author used Zen components and was informed in the “mixing with Six Great Elements and Five Phases”. The thought of “mixing with Six Great Elements and Five Phases” was initiated by Kakuban (1095-1143) who restored the Shingon Buddhism in Japan. Based on the “Six Great Elements” initiated by Kukai (773-835), Kakuban adopted the “Five Phases” from traditional Chinese thought to write The Secret Illumination on the Five Cakras and the Nine Syllables. This mixture later affected the Shingon Buddhism and many other Japanese Buddhist schools, including the apocrypha author of the one-volume version.