大乘義章 13.22

13.22

淨望無漏亦三句說：一具緣多少。除其因緣，有餘三種。淨生無漏，非自分故，無其因緣；餘三義寬，故得有之。二就地分別。自地他地皆得為緣，與前門中後三緣同。三品數分別。淨與無漏異類相生，不可分其上中下別，但知通與一切所生為三緣異（此兩門竟）。

Pure [concentration] viewed in relation to anāsrava is also explained in three clauses: First, the completeness and number of conditions. Excluding the cause-condition, there are the remaining three kinds. Pure generating anāsrava is not of the same category, so it lacks its cause-condition; the remaining three are broad in meaning, and therefore can exist. Second, discrimination with respect to stages. Both its own stage and other stages can serve as conditions, identical to the latter three conditions in the preceding section. Third, discrimination by grades of quality. Because pure and anāsrava generate one another as different categories, they cannot be distinguished into superior, medium, and inferior; one need only know that it serves as three conditions generally for everything generated (these two sections are concluded).