俱舍論頌疏論本 28.81

28.81

淨無漏遍緣者，淨及無漏俱能遍緣自上、下地，有為、無為皆為境故。有差別者，無記無為，無漏不緣，非諦攝故。

As for 'the pure and undefiled cognize universally,' both the pure and the undefiled can universally cognize their own, upper, and lower stages, taking both conditioned and unconditioned as objects. As for the difference: the unconditioned-neutral is not cognized by the undefiled, because it is not subsumed under the truths.