注維摩詰經 9.120

9.120

肇曰：慈悲為根、發心為心，然後順四攝化眾生，護正法種善根。以此眾德茂其枝條，道樹日滋不盡有為也。下諸行願枝條之流，及其日滋日茂以成不盡義耳。度捨慈悲，道樹不建、眾德損耗，自隱涅槃，謂盡有為法也。

[Seng]zhao says: Loving-kindness and compassion serve as the roots, and the initial resolve serves as the mind; after that, one accords with the four means of embracing to transform sentient beings, and protects the true Dharma to plant wholesome roots. Using these manifold virtues to make its branches luxuriant, the tree of the Way flourishes day by day without exhausting conditioned [activity]. The practices and vows detailed below are instances of these branches; as they flourish day by day, they bring about the meaning of not exhausting [the conditioned]. If one casts aside loving-kindness and compassion, the tree of the Way is not established, the manifold virtues dwindle, and one conceals oneself in nirvāṇa—this is called exhausting conditioned dharmas.