I have heard that on one occasion the Blessed One was staying in Savatthi, at the Eastern Gatehouse. There he addressed Ven. Sariputta: "Sariputta, do you take it on conviction that the faculty of conviction, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation? Do you take it on conviction that the faculty of persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation?"

"Lord, it's not that I take it on conviction in the Blessed One that the faculty of conviction... persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation. Those who have not known, seen, penetrated, realized, or attained it by means of discernment would have to take it on conviction in others that the faculty of conviction... persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation; whereas those who have known, seen, penetrated, realized, & attained it by means of discernment would have no doubt or uncertainty that the faculty of conviction... persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation. And as for me, I have known, seen, penetrated, realized, & attained it by means of discernment. I have no doubt or uncertainty that the faculty of conviction... persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation."

"Excellent, Sariputta. Excellent. Those who have not known, seen, penetrated, realized, or attained it by means of discernment would have to take it on conviction in others that the faculty of conviction... persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation; whereas those who have known, seen, penetrated, realized, & attained it by means of discernment would have no doubt or uncertainty that the faculty of conviction... persistence... mindfulness... concentration... discernment, when developed & pursued, gains a footing in the Deathless, has the Deathless as its goal & consummation."