金光明最勝王經疏 3.157

3.157

贊曰：顯三清淨。文段分三，謂標、徵、列。煩惱淨二障及業，苦淨即二死，相淨即習氣。由斯三淨，更無過上，名極清淨。

The commentary says: Revealing the three purities. The text is divided into three parts: statement, query, and enumeration. 'Purity from affliction' refers to the two obstacles and karma; 'purity from suffering' refers to the two kinds of death; 'purity from marks' refers to latent impressions. Because of these three purities, there is nothing higher; thus it is called utmost purity.