成唯識論述記 7.131

7.131

述曰：染謂有覆，淨謂無覆，於染、淨二無記，眠等三皆通，即欲界修道二見俱有眠等故，初定有尋、伺故，惡作非染無記，以解麁猛故，不與二見俱，染必不善故。

The Commentary states: 'Defiled' refers to the obscured, and 'pure' refers to the unobscured. Within the two kinds of indeterminate [natures]—the defiled and the pure—the three beginning with torpor all extend [to both], because in the path of cultivation in the desire realm, the two views are accompanied by torpor and so forth, and the first dhyāna contains investigation and analysis. Remorse is not defiled-indeterminate, because its comprehension is coarse and fierce; thus it is not associated with the two views, as defilement [in its case] is necessarily unwholesome.