佛說觀佛三昧海經 2.20

2.20

"When the daughters had seen this, their hearts felt extreme grief and pain, as if an arrow had pierced their hearts. Shrinking backward, they crawled away like the gait of an emaciated camel. As they first lifted their feet, fire blazed from every joint; their hair, yellowish-black like a thicket of brambles, bound their bodies. Wailing and sighing, they came before the Demon King. The Demon King was enraged; brandishing his sword with a fierce countenance, he was about to charge straight forward. The demon's son admonished him, saying: 'Father, do not bring wounds and sores upon yourself blamelessly! The Bodhisattva's practice is pure and immovable as the earth; how could he be destroyed?'