增壹阿含經 50.6.p28

50.6.p28

“Now, I observe this type of sentient being likewise who ends the contaminants. Becoming uncontaminated, their mind is liberated, and their wisdom is liberated: ‘Birth has been ended, the religious practice has been established, and the task has been accomplished.’ This is called a realized person. This person has arrived there. I know the path of Nirvāṇa, and I know the sentient beings who [enter] parinirvāṇa. I fully know of them.