俱舍論記 27.73

27.73

「理實一切至能為加行」者，論主述正義。理實一切無礙解生，唯學佛語能為加行，以佛語中具明法、義、詞、辨四故。故《婆沙》一百八十評家云「如是說者，四無礙解皆以習佛語為加行。如於一伽陀中應如是說彼名，習如是說名，是法無礙解加行。應如是解彼義，習如是解義，是義無礙解加行。應如是訓彼詞，習如是訓詞，是詞無礙解加行。應如是無滯說，習如是無滯說，是辨無礙解加行。是故四無礙解皆以習佛語為加行。」

Regarding the passage from "In truth, for all of them" up to "serves as preparatory cultivation": the author of the treatise sets forth the orthodox view. In truth, for the arising of all analytical knowledges, solely studying the Buddha's word can serve as preparatory cultivation, because within the Buddha's word the four—Dharma, Artha, Nirukti, and Pratibhāna—are fully expounded. Therefore, the evaluative master in the Mahāvibhāṣā, fascicle 180, states: "As for the correct view: all four analytical knowledges take practicing the Buddha's word as their preparatory cultivation. Just as, regarding a single verse (gāthā), one ought to speak its name like this: practicing the speech of names like this is the preparatory cultivation for Dharma-pratisaṃvid. One ought to understand its meaning like this: practicing understanding the meaning like this is the preparatory cultivation for Artha-pratisaṃvid. One ought to explain its expression like this: practicing explaining expressions like this is the preparatory cultivation for Nirukti-pratisaṃvid. One ought to speak without hindrance like this: practicing speaking without hindrance like this is the preparatory cultivation for Pratibhāna-pratisaṃvid. Therefore, all four analytical knowledges take practicing the Buddha's word as their preparatory cultivation."