首楞嚴義疏注經 4.471

4.471

「阿難！汝今欲逆生死欲流，返窮流根至不生滅，當驗此等六受用根，誰合誰離？誰深誰淺？誰為圓通、誰不圓滿？」

"Ānanda! If you now wish to reverse the flow of desire in birth and death, trace back to the root of the flow to reach the unarisen and unperishing, you should examine these six experiential faculties: which is joined and which is separated? Which is deep and which is shallow? Which is perfectly penetrating, and which is not complete?"