淨名經集解關中疏 2.43

2.43

He asked again: "Is this illness conjoined with the body, or is it conjoined with the mind?" Second, he inquires with reference to body and mind. [Seng]zhao says: "Some, hearing that the illness cannot be seen, might suppose that because mental illness is formless, it cannot be seen; or they might suppose that because physical illness is subtle, it cannot be seen. For this reason, the question arises: with what thing in the body or mind is the illness conjoined, such that you say it cannot be seen?"