仁王經疏 2.292

2.292

釋曰：第二智空。於中有三：初法、次喻、後合。法中有二：初遣知等六相。比度名智、推求言見、歷境稱行、籌慮名緣、招果名因、領納名受，如是六相悉皆是空。後釋遣所由，故言不得一切照相故行道相。

Explanation: Second is the emptiness of cognition. Herein there are three: first the dharma, next the analogy, and then the synthesis. In the dharma, there are two: first, setting aside the six characteristics such as knowing. Inference is called 'wisdom'; searching and seeking is called 'seeing'; traversing objects is called 'practice'; deliberating is called 'cognizing'; incurring results is called 'cause'; experiencing and receiving is called 'feeling'—these six characteristics are all empty. Next, it explains the reason for setting them aside, hence it says 'not grasping all illuminated characteristics, hence the characteristics of traversing the path'.