大乘義章 7.54

7.54

次就三性分別其相。言三性者，所謂善、惡、無記業也。欲界作業，通其三性。色界作業，唯善無記，不通不善。若言寄起欲界惡業，得有不善。毘曇法中，悉無寄起，界地斷故。欲界無作，唯善與惡，不通無記。無記羸劣，不能發生無作業故。色界無作，其唯善業。若言寄起下界惡業，得有不善。無色無作，與色界同。欲界非作非無作者，該通三性。色界非作非無作者，當界以論唯善無記，若言寄起欲界惡業，得有不善。無色非作非無作者，與色界同。無漏業者，局唯在善（此二門竟）。

Next, their characteristics are distinguished according to the three natures. The 'three natures' refer to wholesome, unwholesome, and indeterminate karma. Manifest karma of the desire realm encompasses all three natures. Manifest karma of the form realm is solely wholesome or indeterminate, and does not encompass the unwholesome. If one speaks of an unwholesome karma of the desire realm being initiated by borrowing [higher form], it can be unwholesome; in Abhidharma doctrine, there is no initiated borrowing at all, because realms and grounds are severed. Unmanifest [karma] of the desire realm is solely wholesome or unwholesome, and does not encompass the indeterminate, because the indeterminate is weak and cannot produce unmanifest karma. Unmanifest [karma] of the form realm is solely wholesome karma. If one speaks of an unwholesome karma of the lower realm being initiated by borrowing, it can be unwholesome. Unmanifest [karma] of the formless realm is the same as that of the form realm. Neither-manifest-nor-unmanifest [karma] of the desire realm extends across all three natures. When discussing neither-manifest-nor-unmanifest [karma] of the form realm within that realm, it is solely wholesome or indeterminate; if one speaks of an unwholesome karma of the desire realm being initiated by borrowing, it can be unwholesome. Neither-manifest-nor-unmanifest [karma] of the formless realm is the same as that of the form realm. Untainted karma is restricted solely to the wholesome. (This concludes the second section.)