首楞嚴義疏注經 4.543

4.543

見聞覺知由塵所發，畢竟無體；今非此等，斯揀妄也。明不下顯真，謂真妙覺明不循根境，即不逐緣生、不因境起，了然自覺，即是性明。《圓覺》亦云「無知覺明不依諸礙」，此亦揀非知覺，顯是真明，豈依根塵而始顯發？故云寄也，由是寄故，互相為用。

Seeing, hearing, feeling, and knowing are brought forth by dusts and ultimately have no substantial entity; the present [state] is not like these—this is to eliminate the false. The text from "luminosity does not..." downward reveals the true, meaning that true, wonderful, and enlightened luminosity does not conform to faculties and objects; that is, it does not arise following conditions nor does it arise due to objects. Clear and self-aware, this is indeed the luminosity of nature. The Sūtra of Perfect Enlightenment also states: "Awareness and luminosity free of [dualistic] knowledge do not depend on various obstructions." This also eliminates false cognition and reveals the true luminosity. How could it depend on faculties and dusts before manifesting? Therefore it says "relying"; it is because of this relying that they function interchangeably.