增壹阿含經 50.6.p13

50.6.p13

“‘I know the destiny of animal births, and I know what leads to birth as animals.’ What’s the basis for saying this? Here, monks, I observe the thoughts in the mind of a sentient being: ‘After this person’s body breaks up and their life ends, they will be born as an animal.’ Afterward, I observe that this person has been born as an animal, and their grief, sorrow, pain, and trouble are indescribable.