Indriyasaṁyutta 45
Linked Discourses 48.45
5. Old Age
At the Eastern Monastery (1st)
1 So I have heard. At one time the Buddha was staying near Sāvatthī in the stilt longhouse of Migāra’s mother in the Eastern Monastery. There the Buddha addressed the mendicants: “Mendicants, how many faculties must a mendicant develop and cultivate so that they can declare enlightenment: ‘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”’?”
2 “Our teachings are rooted in the Buddha. …”
“A mendicant must develop and cultivate one faculty so that they can declare enlightenment. What one? The faculty of wisdom. When a noble disciple has wisdom, the faith, energy, mindfulness, and immersion that follow along with that become stabilized. This is the one faculty that a mendicant must develop and cultivate so that they can declare enlightenment: ‘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.”’”