說無垢稱經疏 4.550

4.550

贊曰：此觀因緣。病由業生，業由惑生，惑由執我為本故生。我既實無，妄執故起，妄心為本，遂有病生。故知病者，因緣不實。

The Commentary says: This is contemplating conditions. Illness arises from karma, karma arises from delusion, and delusion arises because it takes clinging to a self as its root. Since a self is genuinely non-existent, it arises through false clinging; taking the deluded mind as its root, illness subsequently arises. Therefore, one knows that illness is conditioned and unreal.