成唯識論演祕 1.843

1.843

實亦得有長、短量合，不異微、大二量體故，故不言也。有義：即是微量及短量德子微有故。

In fact, it can also have a combination of long and short extension, but because their essence is not different from the two extensions of infinitesimal and gross, they are not mentioned. Another opinion holds: 'It is precisely the qualities of infinitesimal extension and short extension, because they belong to the secondary atoms.'