Mahabharata 3.160.18

3.160.18

brahmaṇaḥ sadanāttasya paraṃ sthānaṃ prakāśate |
devāśca yatnātpaśyanti divyaṃ tejomayaṃ śivam || 18 ||

And, O highly fortunate one, there illumining the northern regions, lieth the puissant Mahameru, auspicious and the refuge of those knowing Brahma, where is the court of Brahma, and remaining where that soul of all creatures, Prajapati, hath created all that is mobile and immobile. And the Mahameru is the auspicious and healthy abode even of the seven mind-born sons of Brahma, of whom Daksha was the seventh. And, O child, here it is that the seven celestial rishis with Vasishtha at their head rise and set. Behold that excellent and bright summit of the Meru, where sitteth the great sire (Brahma) with the celestials happy in self-knowledge. And next to the abode of Brahma is visible the region of him who is said to be the really primal Cause or the origin of all creatures, even that prime lord, god Narayana, having neither beginning nor end. And, O king, that auspicious place composed of all energies even the celestials, cannot behold. And the region of the high-souled Vishnu, by its native splendour, exceeding in effulgence the sun or fire, cannot be beheld by the gods, or the Danavas. And the region of Narayana lieth resplendent to the east of the Meru, where, O child, that lord of all creatures, the self-create primal Cause of the universe, having manifested all beings, looketh splendid of his excellent grace. O child, not to speak of the Maharshis--even Brahmarshis have no access to that place. And, O best of the Kurus, it is the Yatis only who have access to it.