俱舍論疏 8.68

8.68

論「若異此者至體非中有」，此反釋也。若不唯是無覆無記，即趣雜亂。一趣之中得有五趣業、煩惱故，明趣非是善、染攝也。「五趣唯是有情數」等，如文可解。

On the Śāstra's statement: "If it were otherwise ... its essence would not be intermediate existence": this explains by the contrary. If it were not exclusively non-obscured and neutral, then the destinies would be confused. Because within a single destiny there can exist karma and defilements belonging to all five destinies, it is clear that destinies are not subsumed under the good and defiled. "The five destinies are only counted among sentient beings", and so forth, can be understood from the text.