成唯識論述記 4.29

4.29

The Commentary states: Although the eighth consciousness can serve as the co-nascent support, seed support, faculty, and intentional object for manas, now it takes only the co-nascent support. Saying that it serves as support for manas, the sixth mental consciousness operates in dependence on it. Furthermore, because the eighth consciousness can serve as the fundamental support for all phenomena, with manas as support, the sixth consciousness operates, like the eye faculty and the rest, which are faculties as predominant conditions. That the sixth separately relies on the seventh, and the seventh relies on the eighth, is not accepted by the various schools; therefore an inference should be formulated.