After that, on one hand, he made religious arguments against Gien and others in Nara Kofuku-ji Temple as one to represent Saicho's will, while on the other hand he busied himself in establishing Daijo-Kaidan (Mahayana ordination center) at Enryaku-ji Temple.
その後最澄の意を体して奈良興福寺の義延らと宗論をたたかわせる一方、延暦寺に大乗戒壇を開設することにも奔走した。