淨名經集解關中疏 2.100

2.100

又問。善不善孰為本　此四六重問答。窮惑源之本妄。悟妄即自性空矣。不同二乘斷惑證空。惑次第配五住煩惱理亦可然。隨文亦好此問也。肇曰。既知善之可生惡之可滅。將兩捨以求宗故逆尋其本也。生曰。一善一惡者迭為根本永無制也。要當求其大原而觀之者然後制矣。

He asked again: "What is the root of wholesome and unwholesome?" These are the fourth [series of] six exchanges of question and answer, exhausting the primal delusion of the source of afflictions, realizing that delusion is itself empty of self-nature. This is not like the two vehicles cutting off delusion to witness emptiness. Delusion sequentially matches the afflictions of the five entrenchments; the principle is also like this. Following the text is also good for this question. Sengzhao says: "Having understood that the good can arise and the bad can be eliminated, intending to relinquish both to seek the fundamental, he traces back to their root." [Dao]sheng says: "The good and the bad alternate as each other's roots without ever being controlled. One must seek their great origin and contemplate it, and only then will they be controlled."