起信論註 1.28

1.28

Treatise: If one attains thoughtlessness, then one knows the mind's marks of arising, abiding, changing, and ceasing, because of being equal to thoughtlessness. (Commentary: This reveals the virtue of the enlightened one. If delusion has not yet ceased, one does not know that the one mind is originally devoid of marks and thoughts. If one reaches the mind-source and attains thoughtlessness, then one knows that the essence of sentient beings is itself thoughtlessness. The Buddha's essence of thoughtlessness is equal to them; therefore, he can universally know that all thoughts are thoughtless. In response to the previous text on the four marks: in the aspect of the stage of gradual enlightenment, it is said that sentient beings have not reached ultimate enlightenment only because avidyā is not yet exhausted. In the tathatā aspect, originally there are no marks or thoughts; likewise, original enlightenment and non-enlightenment are only because delusion has not yet ceased, and one does not know that the one mind is originally devoid of marks and thoughts. Reply: If delusion has not ceased in all sentient beings, they are profoundly separated from the Buddha's essence, and so they do not know that the Buddha's essence is thoughtless. If they reach the original tathatā mind-source and attain thoughtlessness, then they know that the essence of sentient beings is itself thoughtlessness; the Buddha's essence of thoughtlessness is equal and without difference to the essence of sentient beings, and therefore one knows that all thoughts are originally thoughtless.)