抄録
Junshobo-Koshin (順性房高信), a disciple of Myoe 明恵, wrote the Rokudaimuge gisho (六大無碍義抄) in 1247. Of the works of the disciples of Myoe, this book is the only document which offers an interpretation of the Sokusin jobutsu-gi (即身成仏義). Three versions of Junshobo-Koshin's Rokudaimuge gisho survive in manuscript form: the version contained in the Kozan-ji collection, that contained in the Shinpuku-ji collection, and the version held by Kyoto University Library. Five years after he composed his Rokudaimuge gisho, Raiyu completed his Sokushin jobutsu-gi Kentokusho (即身成仏義顕得鈔). Due to the fact that he quotes extensively from the Sokushin jobutsu gisyo (即身成仏義章) of Kakuban (覚金), it has been assumed that the latter provided Raiyu with his major source. The Sokushin jobutsu-gi Kentokusho, however, is a highly complex work which builds on Raiyu's own thought and the works of others. Thus, it is incorrect to suppose that the entirety of the work is derived from Raiyu's own thought. On the basis of a comparison between the Rokudaimuge gisho and the Sokushinjobutsu-gi Kentokusho, it will be argued in this paper that Raiyu's earlier interpretation of the Sokushin jobutsu-gi was instead shaped by the esoteric Buddhism he studied at Kozan-ji temple.