Visuddhimagga XXII-38

823. Bujjhanakasattassa pana aṅgabhāvena satiādayo satta bojjhaṅgā. Niyyānikaṭṭhena ca sammādiṭṭhiādayo aṭṭha maggaṅgā honti. Tena vuttaṃ ‘‘satta bojjhaṅgā ariyo aṭṭhaṅgiko maggo’’ti.

（七觉支、八支圣道）念等是觉了有情的支分，故为七觉支。正见等依出离之义为八道支。所以说「七觉支、八支圣道」。

Ñ(XXII,38): Mindfulness, [investigation-of-states, energy, happiness, tranquillity, concentration, and equanimity,] as factors in a being who is becoming enlightened, are the 'seven enlightenment factors'. And right view, [right thinking, right speech, right action, right livelihood, right effort, right mindfulness, and right concentration,] are the eight 'path factors' in the sense of being an outlet. Hence, 'seven enlightenment factors' and 'the Noble Eightfold Path' is said.