成唯識論述記 4.17

4.17

述曰：下別釋有二：初解、上半；後解、下半。解上半中：初、別解二句；後、結所明。解第一句為因用。言「界」者即是因義，故成因用。種、現識中，是種子識。雖復現行亦名因相，能生諸法種子親故，無始時來展轉相續，剎那不斷，親生諸法。「親生」之言，顯為因義，非為助緣，親能生故。言「諸法」者，即第二句一切法言。此以「諸言」牒下一切。此識無始時來，與一切法為因，故經言界是為因用。

The Commentary states: In the specific explanation below there are two parts: first, explaining the first half; afterwards, explaining the second half. In explaining the first half: first, specifically explaining the two lines; afterwards, concluding what has been clarified. Explaining the first line as the function of cause: The word "realm" (dhātu) is precisely the meaning of cause; hence it constitutes the function of cause. Between the seed and active consciousness, it is the seed-consciousness. Although the active [consciousness] is also called the causal aspect, because it directly produces all phenomena it is directly seed, continually succeeding from beginningless time, uninterrupted from moment to moment, directly producing all phenomena. The phrase "directly producing" indicates the meaning of cause, not an auxiliary condition, because it can directly produce them. "All phenomena" refers to the words "all phenomena" in the second line. This repeats the subsequent "all" by the word "all." This consciousness from beginningless time serves as cause for all phenomena; therefore the sūtra says "realm," which is the function of cause.