俱舍論疏 3.40

3.40

論「此成清淨由後三根」，此有三種：若體無漏故名清淨，即唯意根；若離自煩惱縛及還滅故名清淨者，即通眼等六根。

The Śāstra states: "Their becoming pure is due to the last three faculties." This has three kinds: If it is called pure because its essence is anāsrava, then it is solely the mental faculty; if it is called pure because of freedom from the bondage of its own defilements and because of cessation, then it applies to the six faculties, the eye and the rest.