佛祖統紀 10.65

10.65

述曰。吳越王杭海取教。實基於同除四住之語。及觀師製四教儀。至明圓教中故特標永嘉云者。所以寓當時之意。俾後人無忘發起也。此書即荊溪八教大意。觀師略加修治。易以今名。沒前人之功。深所不可。

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.