He established "Sange-gakushoshiki" (The Regulations for Students of the Mountain School), and he required that those who underwent Tendai School training to take Mahayana precepts to become bodhisattva priests and to train themselves in the mountains for 12 years.
『山家学生式』（さんげがくしょうしき）を定め、天台宗の年分度者は比叡山において大乗戒を受けて菩薩僧となり、12年間山中で修行することを義務づける。