花嚴經文義綱目 1.78

1.78

四光體者，亦有四種：一是事光，如流星霞雲等。二是法光，謂顯示法門故。三是理光，謂非青黃赤白，不生滅故。四無礙光，前三無礙融現前故。

Fourth, concerning the essence of the light: there are likewise four kinds: first, phenomenal light, such as shooting stars, glowing clouds, and the like. Second, Dharma-light, which means manifesting the Dharma-gates. Third, principle-light, which means being neither blue, yellow, red, nor white, and neither arising nor ceasing. Fourth, unobstructed light, because the preceding three manifest together before one in unimpeded fusion.