金光明經文句記 6.191

6.191

初、明住法性定。問：諸經先須入定，定起方說；今經何故一向在定而有所說耶？答：若論法性上定，豈有出入說默之異？既示其定，蓋順物機，物機所宜適樂不同。諸經示同往佛皆先入定，履歷法緣，對治散心妄有所說，故須入定，定起方說。此經首尾在定而能說者，意同向理。又示金光明無量甚深自在無礙、寂照融遍，故說畢定起，印成三番快領如來所說法也。

First, clarifying abidance in the samādhi of dharma nature. Question: In other sūtras, the Buddha must first enter samādhi and preach only after rising from samādhi; why does the present sūtra preach while persistently in samādhi throughout?
Answer: If one discusses the superior samādhi of the dharma nature, how could there be any distinction between emerging and entering, speaking and silence? That he displays samādhi is merely to comply with the capacities of beings, and what is suitable and pleasing to beings' capacities varies. Other sūtras, showing conformity with past Buddhas, all first enter samādhi, traversing conditions of dharmas to remedy the scattered mind that preaches falsely; hence he must enter samādhi and preach only after rising from samādhi. That this sūtra preaches from beginning to end while in samādhi shares the same meaning with the principle stated above. Furthermore, it reveals that the Golden Light is immeasurably profound, unimpeded in sovereignty, and that quiescence and illumination are harmoniously pervasive; therefore, after the preaching is completed, he arises from samādhi and seals and confirms the three rounds of excellent understanding of the Dharma expounded by the Tathāgata.