佛祖統紀 10.65

10.65

The commentary says: The King of Wuyue's crossing of the sea to retrieve the teachings indeed took its basis from the phrase 'together expelling the four dwellings'. When Master Guan composed the Sijiao yi, in elucidating the Perfect Teaching he specially highlighted Yongjia's words precisely to lodge the intention of that time, so that later people would not forget what initiated it. This book is simply Jingxi's Bajiao dayi; Master Guan slightly edited it and changed it to its present title. To obscure the achievements of predecessors is profoundly improper.