In the year 806, he received the Endonkai (Precepts for Perfect and Immediate Enlightenment) from Saicho and his aptitude led to him being given the opportunity to recite the second volume of the Lotus Sutra following Saicho at a Hokke Choko (long recitation of the Lotus Sutra) in the year 807.
806年（大同(日本)元年）最澄による最初の円頓戒授与で受戒者の上首となり、翌807年（大同2年）の法華長講では最澄の次に第2巻を講説した。