淨名經集解關中疏 2.42

2.42

維摩詰言。我病無形不可見　肇曰。大悲無緣。無緣則無相。以此生疾。疾亦亦無相。故曰。我病無形不可見。

Vimalakīrti said: "My illness is formless and cannot be seen." [Seng]zhao says: "Great compassion is objectless (anālambana). Being objectless, it is devoid of marks. Manifesting illness by means of this, the illness is likewise devoid of marks. Therefore, he says: 'My illness is formless and cannot be seen.'"