瑜伽論記 19.269

19.269

十內外等四對分別門，補闕云：名唯是外者，法入攝故。分別正智通內外者，心王是內意入攝故，餘數是外法處處攝故。真如非二者，不同餘四是內是外故言非二，法相道理真如是外法處攝故，言非相漸減極略義故者，不同相中色法漸減至一極微微略名細，但以難識義故名為細也。

Tenth, the section discriminating the four pairs of internal, external, and so forth. Buque says: that names are solely external is because they are subsumed under the sense field of mental phenomena. That discrimination and correct gnosis extend to both internal and external is because the primary mind is internal, being subsumed under the sense field of the mind, while the remaining mental factors are external, being subsumed under the sense base of mental phenomena. That tathatā is neither is because it is not like the other four that are internal or external, and so it is said to be neither; according to the principle of phenomenal characteristics, tathatā is external, being subsumed under the sense base of mental phenomena. The statement 'not in the sense of the sign being gradually diminished to the most minute' means: it is not like form among signs, which is gradually diminished to a single minute particle and subtly called subtle; rather, it is called subtle simply in the sense of being difficult to recognize.