In 830 as one of the Tencho Rokupon Shusho (six books compiled at Imperial command by the six Buddhism sects during the Tencho era; each sect described the spirit and the characteristics of its own teachings) ordered by Emperor Junna, on behalf of the Sanron sect he compiled 'Daijo Sanron Daigisho' (notes of religious teachings of the Sanron sect), where he mainly developed the doctrine of his own sect, arguing down that of the Hosso sect (Japanese equivalent of the Chinese Faxiang sect) which in those days was aggressive against the Sanron sect.
830年（天長7年）淳和天皇の命による天長六本宋書の一つとして、三論宗を代表して「大乗三論大乗三論大義鈔」を撰述し、その中では主に当時三論宗に対して攻勢にあった法相宗の宗義を論破しながら三論宗義を展開した。