首楞嚴義疏注經 6.129

6.129

三、四不思議德用殊絕，非言智之所能及也，即顯大圓鏡體功德之相。然功德力用其體一也，以內蘊曰德，外施曰用。前雖隨機現應，適時御物，拔苦與樂，數仍有限，而未備陳自在現化無方之德，妙妙無比，難可思議，故今述也。文二：

Third, the four inconceivable virtuous functions are exceedingly extraordinary, beyond the reach of speech and intellect; they reveal the characteristics of the merit of the Great Perfect Mirror's substance. However, the substance of merit, power, and function is one: what is harboured within is called virtue, and what is applied outwardly is called function. Although previously responding according to capacities, governing things in a timely manner, pulling out suffering and giving joy, their numbers were still limited, and the virtue of freely manifesting transformations without limitation was not yet fully expounded; exceedingly wondrous beyond compare and difficult to conceive, it is therefore related now. The text has two parts: