仁王經疏 1.17

1.17

就序分中，文別有二：初明證信序，後「爾時十號」下辨發起序。然此二序，有三差別：一者名別。一名證信，亦名通序；二名發起，亦名別序。說我聞等，令物生信，名為證信。諸經皆同，名為通序。以放光等發起正宗，名為發起；隨部各別，名為別序。二者時別。一名經前序，未說經時，先發起故；二名經後序，說經以後方始諸故。三者人別。一名如來序，於諸經中佛發起故；二名阿難序，由阿難請方始說故。

Regarding the introductory division, the text has two distinct parts: first, clarifying the preface certifying faith; later, from "At that time the Ten Epithets" onward, discerning the initiating preface. However, these two prefaces have three distinctions: First, distinction in name: one is named certifying faith, also called the general preface; the second is named initiating, also called the specific preface. Stating "I heard" and so forth causes beings to generate faith, hence it is called certifying faith; since all sūtras share this, it is called the general preface. Initiating the main doctrine through emitting light and so forth is called initiating; since it is distinct according to each scripture, it is called the specific preface. Second, distinction in time: one is called the preface before the scripture, because it is initiated prior to the preaching of the scripture; the second is called the preface after the scripture, because it was only composed after the preaching of the scripture. Third, distinction in person: one is called the Tathāgata's preface, because in all sūtras it is initiated by the Buddha; the second is called Ānanda's preface, because it was only spoken following Ānanda's request.