Tevijjasutta 1.40

1.40

Then the Blessed One spake, and said:
‘Know, Vāseṭṭha, that (from time to time) a Tathāgata is born into the world, an Arahat, a fully awakened one, abounding, in wisdom and goodness, happy, with knowledge of the worlds, unsurpassed as a guide to mortals willing to be led, a teacher of gods and men, a Blessed One, a Buddha. He, by himself, thoroughly understands, and sees, as it were, face to face this universe—including the worlds above with the cods, the Māras, and the Brahmās; and the world below with its Samaṇas and Brahmans, its princes and peoples;—and he then makes his knowledge known to others. The truth doth he proclaim both in the letter and in the spirit, lovely in its origin, lovely in its progress, lovely in its consummation: the higher life doth he make known, in all its purity and in all its perfectness.’