俱舍論疏 20.167

20.167

論「准此三界至為無明漏」，出無明漏體也。既欲漏、有漏皆不取無明為體，故知三界十五無明，義准已立為無明漏。由此頌中但言「無明諸有本」，不言三界十五無明為無明漏，以說欲漏、有漏，已顯十五無明為無明漏故。

Regarding the treatise's statement from "By extension from this, of the three realms" to "are the outpouring of ignorance": This presents the intrinsic nature of the outpouring of ignorance (avidyāsrava). Since neither the outpouring of desire nor the outpouring of existence takes ignorance as its intrinsic nature, one knows by logical extension that the fifteen ignorances of the three realms are established as the outpouring of ignorance. Therefore, the stanza only says "ignorance is the root of existences" and does not say that the fifteen ignorances of the three realms are the outpouring of ignorance, because having stated the outpourings of desire and existence, it already reveals that the fifteen ignorances are the outpouring of ignorance.