《水经注·卷一》
菩萨用脚趾踏在地上，魔兵就退却逃散了，三个美女都变成老太婆，再也不能恢复为美女了。
魔王自从南来，菩萨以足指按地，魔兵却散，三女变为老姥，不自服。
Bodhisattva stamped his foot on the earth, whereupon the Devil King’s troops fell back and dispersed, and the three beautiful women were transformed into three old women, never to recover their former beauty.