彰所知論 2.27

2.27

四無礙解者，一法無礙解，知諸法名故。二義無礙解，正知義故。三詞無礙解，正知言辭故。四辯才無礙解，正知正理故。名四無礙解。

The four analytical knowledges are: first, the analytical knowledge of dharmas, because one knows the names of dharmas; second, the analytical knowledge of meaning, because one correctly knows meanings; third, the analytical knowledge of language, because one correctly knows expressions; fourth, the analytical knowledge of eloquence, because one correctly knows correct reasoning. These are called the four analytical knowledges.