注維摩詰經 5.104

5.104

肇曰：大悲無緣而無所不緣，無所不緣故能應物生疾，應物生疾則於我未嘗疾也，未甞疾故能同眾疾之相而不違無相之道。何者？大悲無緣，無緣則無相，以此生疾疾亦無相，故曰我病無形不可見也。生曰：病是形，理有必可見，而無其實，故言爾也。

[Seng]zhao says: Great compassion is unconditioned by objects, yet there is nowhere it does not take as an object; because there is nowhere it does not take as an object, it can generate illness in response to beings. Generating illness in response to beings, then with respect to myself there has never been an illness. Having never been ill, it can therefore share the characteristics of all illnesses without contravening the signless Way. Why so? Great compassion is unconditioned; being unconditioned, it is signless. The illness generated through this is also signless; therefore he says: "My illness is formless and cannot be seen."
[Dao]sheng says: Illness has form, and in principle must be visible; yet it lacks reality, which is why he speaks thus.