俱舍論疏 4.243

4.243

論「界差別者至是無漏者」，第三界繫門也。非得隨身繫故，故三界法各各皆有三界非得。身在下界，欲界非得，非得三界。色、無色界義亦准此。欲界繫法有三界非得，色、無色界義亦准此。非得隨身不隨法故，所以非得不通無漏。無漏非得亦通三界，三界異生皆不成故。

[On the Śāstra's statement:] "As for the distinction of realms: [… is uncontaminated]," this is the third section, the gate of connection to realms. Because non-possession follows the realm-connection of the physical embodiment, each of the phenomena of the three realms has non-possession of the three realms. If the physical embodiment is in the lower realm, non-possession belongs to the desire realm, and non-possesses [phenomena of] the three realms. For the form and formless realms, the meaning should also be understood accordingly. Phenomena bound to the desire realm have non-possession of the three realms; for the form and formless realms, the meaning should also be understood accordingly. Because non-possession follows the embodiment and does not follow the phenomenon, non-possession does not connect to the uncontaminated. Non-possession of uncontaminated [states] also connects to the three realms, because ordinary beings of the three realms all fail to possess them.