He carried on and spread Sango-kimyo-setsu (the theory that faith is essential for three activities: action, speech and thought) of Kozon, but was confronted by other Gakuso (scholar monks) and caused the Sango Wakuran Controversy (The Incident that Disturbed the Three Deeds).
功存の三業帰命説を継承し広めたが、その他の学僧と対立し、三業惑乱の騒動を引き起こした。