金光明經文句記 4.310

4.310

二、觀法，二：初、橫推。以現名色對過去業，推無四性。羅漢有業者，無始所造諸有業因，其數何限？無惑潤故，不受後身，故曰不生。各有等者，如合兩空，豈成一色？

Second, contemplating phenomena, which has two parts: first, horizontal investigation. Investigating the absence of the four natures by contrasting present name-and-form with past karma. As for "an arhat has karma": how could there be a limit to the number of causal karmas in all realms of existence created since beginningless time? Because they are not moistened by affliction, he does not receive a future body; hence it is said that "it does not arise." As for "each having," etc.: just as when combining two spaces of emptiness, how could they form a single piece of matter?