觀無量壽佛經疏 3.151

3.151

三、從圓光面各百二十五由旬已下，正明圓光等不同觀音之相。即有其四。一明圓光大小。二明光照遠近。三明化佛多少。四明化佛侍者多少。

Third, from "The halo on each side is one hundred and twenty-five yojanas" downward, it properly explains that characteristics such as the halo differ from those of Avalokiteśvara. There are four points: first, it explains the size of the halo; second, it explains the reach of the illuminating light; third, it explains the number of transformed buddhas; fourth, it explains the number of transformed buddhas' attendants.