金光明最勝王經疏 3.13

3.13

贊曰：第八、常無常門。文分為二：初總標、次別解。此總標也。以有義故而說於常，通於三身。說無常者，不遍法身。下云「非行法故、是根本故，但說為常。」或可如如智合名法身，四智無常，故總標云或說無常。下約如如，但云是常，非是行法。或約非煩惱為之行法，云非行法。

Commentary: Eighth, the gate of permanence and impermanence. The text is divided into two: first a general statement, and next a distinctive explanation. This is the general statement. 'For a reason they are spoken of as permanent' applies commonly to all three bodies. Stating that they are impermanent does not apply comprehensively to the dharmakāya. Below it says: 'Because it is not a conditioned phenomenon and because it is the root, it is only spoken of as permanent.' Alternatively, tathatā and wisdom combined are named the dharmakāya; since the four wisdoms are impermanent, the general statement says 'or spoken of as impermanent.' Below, according to tathatā alone, it says it is permanent and is not a conditioned phenomenon. Or, based on its not being a conditioned phenomenon caused by afflictions, it is said to not be a conditioned phenomenon.