俱舍論頌疏論本 10.13

10.13

說能染慧故者，引教證也。如契經言：「貪欲染心，令不解脫。無明染慧，令不清淨。」此經既說無明染慧，故知慧體不是無明。無明若慧，豈可慧體還能染慧？然無明體謂不了知四諦、三寶、善惡業果，即是了知所治別法。大德法救說：「無明體是諸有情恃我類性。」解云：無明恃我而起，即我慢之類也。

"And because it is said to be able to defile wisdom": this cites doctrinal authority as proof. As the sūtra states: "Greedy desire defiles the mind, preventing it from being liberated. Ignorance defiles wisdom, preventing it from being pure." Since this sūtra states that ignorance defiles wisdom, we know that the essence of wisdom is not ignorance. If ignorance were wisdom, how could the essence of wisdom defile wisdom itself? However, the essence of ignorance is the failure to comprehend the four truths, the Three Jewels, and wholesome and unwholesome karmas and their fruits; that is, it is a separate dharma that opposes comprehension. The Venerable Dharmatrāta said: "The essence of ignorance is the nature belonging to sentient beings that relies upon the self." Explanation: Ignorance arises relying on the self, which is of the class of the conceit of self (ātmamāna).