He began by studying the three treatises (the Treatise on the Middle Way, the Treatise on the Twelve Gates, and the One-Hundred-Verse Treatise) under Buan of Gango-ji Temple before being consecrated by Kukai.
初め元興寺の豊安（ぶあん）に三論（中論・十二論・百論）の教学を学び、その後空海から灌頂を受けた。