十不二門指要鈔 2.92

2.92

初、約一性明自他。證果之後不動而應，眾機普益，既非謀作皆由性同，因果驗之灼然不二。

First, clarifying self and other in terms of the single nature. After realizing the fruit, responding without moving, universally benefiting the multitudes of capacities—since this is not done through deliberate scheming, it all derives from identity of nature. Verifying this through cause and effect, it is clearly nondual.