At Sālā Sālasutta

So I have heard. Evaṁ me sutaṁ—At one time the Buddha was staying in the land of the Kosalans near the brahmin village of Sālā. ekaṁ samayaṁ bhagavā kosalesu viharati sālāya brāhmaṇagāme. There the Buddha addressed the mendicants: Tatra kho bhagavā bhikkhū āmantesi: “Mendicants, the lion, king of beasts, is said to be the best of animals in terms of strength, speed, and courage. “seyyathāpi, bhikkhave, ye keci tiracchānagatā pāṇā, sīho migarājā tesaṁ aggamakkhāyati, yadidaṁ—thāmena javena sūrena; 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. evameva kho, bhikkhave, ye keci bodhipakkhiyā dhammā, paññindriyaṁ tesaṁ aggamakkhāyati, yadidaṁ—bodhāya.

And what are the qualities on the side of awakening? Katame ca, bhikkhave, bodhipakkhiyā dhammā? The faculties of faith, Saddhindriyaṁ, bhikkhave, bodhipakkhiyo dhammo, taṁ bodhāya saṁvattati; energy, vīriyindriyaṁ bodhipakkhiyo dhammo, taṁ bodhāya saṁvattati; mindfulness, satindriyaṁ bodhipakkhiyo dhammo, taṁ bodhāya saṁvattati; immersion, samādhindriyaṁ bodhipakkhiyo dhammo, taṁ bodhāya saṁvattati; and wisdom are qualities on the side of awakening, in that they lead to becoming awakened. paññindriyaṁ bodhipakkhiyo dhammo, taṁ bodhāya saṁvattati. The lion, king of beasts, is said to be the best of animals in terms of strength, speed, and courage. Seyyathāpi, bhikkhave, ye keci tiracchānagatā pāṇā, sīho migarājā tesaṁ aggamakkhāyati, yadidaṁ—thāmena javena sūrena; 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.” evameva kho, bhikkhave, ye keci bodhipakkhiyā dhammā, paññindriyaṁ tesaṁ aggamakkhāyati, yadidaṁ—bodhāyā”ti.