成唯識論述記 4.31

4.31

The Commentary states: The seventh and sixth consciousnesses also rely on co-nascent supports; because they are subsumed under evolving consciousnesses; like the five consciousnesses such as the eye. The reason for the sixth consciousness is that it is subsumed under evolving consciousnesses, which means it relies on the seventh manas, because the sixth consciousness is admitted to be subsumed under evolving consciousnesses. As for the reason for manas also being subsumed under evolving consciousnesses serving as the reason, this is unestablished for one party. Now one should first establish that the sixth has a faculty, which is precisely manas. Once manas is established, because it is admitted to be an evolving consciousness, it can serve as the reason. Here, the thesis and reason should be understood by conforming to the text and grasping the principle. Above, the establishment of the fundamental consciousness as support has been completed; fearing that an outside objection would say that the nature of the eighth consciousness should also have a support, below it shows that the eighth consciousness also relies on the seventh as support, because the seventh is uninterrupted, while the remaining six are interrupted.