大乘義章 13.25

13.25

無漏望淨，亦三句說：一具緣多少。除其因緣，有餘三種，異類相生非自分故。除其因緣，餘三義寬，故得有之。二就地分別。自地他地皆得為緣。三品數分別。於為緣處，不分上中下品差別（此兩門竟）。

Untainted with respect to pure [dhyāna] is also explained in three points: First, the number of conditions it possesses. Excluding its cause condition, it possesses the other three kinds, because different types generating each other do not belong to its own class. Excluding the cause condition, because the other three are broad in meaning, they can obtain. Second, distinction by stage. Both its own stage and other stages can serve as conditions. Third, distinction by grades. Where it serves as a condition, there is no distinction among superior, middling, and inferior grades (this concludes these two sections).