摩訶止觀 6.219

6.219

無明有二，一、迷理，二、迷事。何者是智障？《地持》說：「二乘無漏，『人無我智』為煩惱障淨智；佛菩薩，『法無我智』為智障淨智。」若爾，二俱是迷理為智障。又智所知礙名為智障者，於一切法知無障礙，即於事中知無障礙，但是迷事為智障。

Ignorance is of two kinds: first, delusion regarding principle; second, delusion regarding phenomena. Which of these is the cognitive hindrance? The Bodhisattvabhūmi states: 'The undefiled "wisdom of personal selflessness" of the two vehicles is the pure wisdom counteracting the affliction hindrance; the "wisdom of phenomenal selflessness" of buddhas and bodhisattvas is the pure wisdom counteracting the cognitive hindrance.' If so, both take delusion regarding principle as the cognitive hindrance. Furthermore, when an obstruction to wisdom's knowables is called a cognitive hindrance, knowing all dharmas without impediment means knowing without impediment amidst phenomena; thus it is solely delusion regarding phenomena that is the cognitive hindrance.