Saṁyutta Nikāya — Discursos Conectados — 48.51 — At Sālā

1So I have heard. At one time the Buddha was staying in the land of the Kosalans near the brahmin village of Sālā. There the Buddha addressed the mendicants: “Mendicants, the lion, king of beasts, is said to be the best of animals in terms of strength, speed, and courage. In the same way, the faculty of wisdom is said to be the best of the qualities on the side of awakening; that is, for becoming awakened.

2And what are the qualities on the side of awakening? The faculties of faith, energy, mindfulness, immersion, and wisdom are qualities on the side of awakening, in that they lead to becoming awakened. The lion, king of beasts, is said to be the best of animals in terms of strength, speed, and courage. In the same way, the faculty of wisdom is said to be the best of the qualities on the side of awakening; that is, for becoming awakened.”