2.
The Discourse on Mallikā
522.
Thus have I heard -
On one occasion the Blessed One was dwelling among the Mallas, where there was a market town of the Mallas named Uruvelakappa.
There the Blessed One addressed the monks thus:
"As long as, monks, noble knowledge has not arisen for a noble disciple, there is no stability of the four faculties, there is no position of the four faculties.
But when, monks, noble knowledge has arisen for a noble disciple, then there is stability of the four faculties, then there is position of the four faculties."
"Just as, monks, as long as the pinnacle of a pinnacle building has not been raised, there is no stability of the rafters, there is no position of the rafters. But when, monks, the pinnacle of a pinnacle building has been raised, then there is stability of the rafters, then there is position of the rafters. So too, monks, as long as noble knowledge has not arisen for a noble disciple, there is no stability of the four faculties, there is no position of the four faculties. But when, monks, noble knowledge has arisen for a noble disciple, then of the four faculties, etc. there is position.
"Which four? The faith faculty, the energy faculty, the mindfulness faculty, the concentration faculty. For a wise noble disciple, monks, faith following that becomes established, energy following that becomes established, mindfulness following that becomes established, concentration following that becomes established." The second.