相応部（サンユッタ・ニカーヤ） 2:10
SUJATOAyaṁ kho sā, bhikkhave, majjhimā paṭipadā tathāgatena abhisambuddhā cakkhukaraṇī ñāṇakaraṇī upasamāya abhiññāya sambodhāya nibbānāya saṁvattati.
This is that middle way of practice, which gives vision and knowledge, and leads to peace, direct knowledge, awakening, and extinguishment.