大乘起信論裂網疏 2.74

2.74

眾生亦爾自性清淨心，因無明風動，起識波浪。如是三事皆無形相，非一非異。然性淨心是動識本，無明滅時，動識隨滅，智性不壞。

Sentient beings are also like this: the inherently pure mind is stirred by the wind of ignorance, giving rise to the waves of consciousness. These three things are all without shape or mark, neither one nor different. Yet the purely natural mind is the basis of the moving consciousness; when ignorance is extinguished, the moving consciousness is extinguished along with it, but the nature of wisdom is not destroyed.