十不二門指要鈔 2.121

2.121

三、故一下，染體本妙。三密相海本理，遮那心塵皆具，例彼生佛名三無差，既云一念凡心，那作非因果釋？

Third, from "therefore one" onward, the defiled essence is fundamentally wondrous. The ocean of marks of the three secrets is the fundamental principle, completely possessed in the mental dust of Vairocana; extending this by analogy to sentient beings and Buddhas, they are called the three without differentiation. Since it says 'a single thought-moment of an ordinary mind', how could it be interpreted as not being cause and effect?