俱舍論頌疏論本 10.6

10.6

釋曰：明所治無明者，明有實體，謂此無明不了四諦。明所對治名曰無明，與明相違方名無明，非是離明之外皆是無明，亦非明無之處名無明也。

Explanation: "Ignorance is the antidote's opposite of vidyā": vidyā (clarity/knowledge) has a real essence, meaning that this ignorance fails to understand the four truths. That which is directly opposed to vidyā is called avidyā (ignorance); only that which is contrary to vidyā is called ignorance—it is not that everything other than vidyā is ignorance, nor is it that where vidyā is absent is called ignorance.