成唯識論述記 7.285

7.285

述曰：自下第二解二無心定。於中：初總解；後別解。此即總也。解第三句頌「及無心二定」，謂無心之言通下四位，其睡眠等皆通有心，故無心言簡之。雖牒一句，然先解二定，逐文便故，以四位俱無六識，故名無心。不言唯於無想天，無心。故知二定無心也。但彼唯有一處，無相類法，故不言無心，此下四位有濫有心，故須簡也。

The Commentary states: From here down is the second [major section], explaining the two mindless attainments. Within this: first is a general explanation; later is a specific explanation. This is the general explanation. It explains the third line of the verse, "and the two mindless attainments." The word "mindless" applies to all four states below; since sleep and the like can all include having a mind, the word "mindless" is used to distinguish them. Although citing one line, it explains the two attainments first, following the convenience of the text. Because in all four states the six consciousnesses are entirely absent, they are termed "mindless." It does not say that mindlessness belongs only to the Non-Conceptual Heaven; thus we know that the two attainments are mindless. However, that [heaven] has only a single place and lacks similar phenomena, so it is not designated "mindless"; whereas these four states below can be confused with having a mind, hence they must be distinguished.