大方便佛報恩經 4.55

4.55

"Furthermore, Devadatta's evil mind did not cease, and he had this thought: 'I should now let the fingernails of my ten fingers grow, making them extremely long and sharp, and smear poison under the nails. When I go to the Tathāgata's place and bow my head to his feet in veneration, I shall scratch the tops of his feet with my ten fingernails. When the poison enters his body, his life will surely be lost.' Having had this thought, he proceeded according to his scheme to the Tathāgata's place, made obeisance with his head, and touched his feet with his hands. At that time, the poison turned into amṛta, and had no effect whatsoever upon the Tathāgata's body.