觀無量壽佛經疏 3.156

3.156

八、從此菩薩行時下，至如極樂世界已來，正明行與觀音不同相。即有其四。一明行不同相。二明震動遠近相。三明所震動處華現多。四明所現之華高而且顯，多諸瑩飾以類極樂莊嚴也。

Eighth, from "When this bodhisattva walks" down to "as in the world of Sukhāvatī," it properly explains the characteristics in which walking differs from Avalokiteśvara. There are four points: first, it explains the characteristic of walking differently; second, it explains the distance of the tremors; third, it explains that flowers appear abundantly wherever tremor occurs; fourth, it explains that the appearing flowers are tall and conspicuous, with many lustrous ornaments, resembling the adornments of Sukhāvatī.