佛說觀佛三昧海經 2.17

2.17

"When the daughters saw this, they immediately vomited endlessly from their mouths. They then saw their own bodies: from the left grew a serpent's head, from the right grew a fox's head, and in the middle grew a dog's head; atop their heads there appeared by transformation nine-colored corpses, like those in the contemplation of the nine stages of a corpse.