Kaḷārasutta

sn12.32:7.1 “Sāriputta, suppose they were to ask you:

sn12.32:7.2 ‘But Reverend Sāriputta, how have you known and seen so that you’ve declared enlightenment:

sn12.32:7.3 “I understand: ‘Rebirth is ended, the spiritual journey has been completed, what had to be done has been done, there is nothing further for this place.’”’

sn12.32:7.4 How would you answer?”