佛說觀佛三昧海經 2.17

2.17

「其女見此即便嘔吐從口而出，無有窮盡。即自見身，左生蛇頭，右生狐頭，中首狗頭，頭上化生九色死屍，如九相觀。

"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.