觀無量壽佛經疏 3.152

3.152

四、從舉身光明下，至名大勢至已來，正明身光遠備照益有緣，等及他方，皆作紫金之色。即有其八。一明身光總別不同。二明光照遠近。三明光所觸處皆作紫金之色。四明但與勢至宿業有緣者，即得覩觸此光。五明但見一毛孔光即能多見諸佛淨妙身光。此即舉少以顯多益，欲使行之者悕心渴仰入觀以證之。六明依光以立名。七明光之體用，即無漏為體，故名智慧光。又能除息十方三惡之苦，名無上力，即為用也。八明名大勢至者，此即依德立名也。

Fourth, from "The light of the entire body" down to "named Mahāsthāmaprāpta," it properly explains that the light of the body extends far, illuminating and benefiting those with karmic connection, reaching other lands equally, turning everything purple-gold in color. There are eight points: first, it explains the general and specific distinctions of the body's light; second, it explains the reach of the illuminating light; third, it explains that wherever the light touches, it turns everything purple-gold; fourth, it explains that only those who have karmic connection through past actions with Mahāsthāmaprāpta can see and encounter this light; fifth, it explains that seeing only the light from a single pore allows one to see the pure and wondrous body-lights of many buddhas—this raises the few to reveal the abundant benefit, causing practitioners to long with thirst and enter contemplation to realize it; sixth, it explains establishing the name based on the light; seventh, it explains the essence and function of the light: the uncontaminated (anāsrava) is its essence, hence called the light of wisdom, and being able to extinguish the suffering of the three evil paths in the ten directions is called unsurpassed power, which is its function; eighth, it explains that being named Mahāsthāmaprāpta is establishing the name based on virtue.