瑜伽論記 21.67

21.67

第三明諸如來化身作業，備、景師云：化身作業，如世界起者，此文意辨他受用身及變化身生起之相，略不辨自受用身。如世界起者，同諸世界所化眾生形類生起，故言如世界起。

Third, explaining the activities of the transformation bodies of the Tathāgatas. Masters Bei and Jing say: 'The activities of the transformation body arise like worlds.' The intent of this text is to distinguish the manner of arising of the other-enjoyment body and the transformation body, omitting the self-enjoyment body. "Arising like worlds" means that they arise in forms and categories corresponding to the sentient beings transformed across all worlds; therefore it is said that they arise like worlds.