The Nether-worlds :* Manifestation of the Luminaries - Verse 221-222

To the north and above the world of sages, where Dhruva is said to be present, is the divine shining region of Visnu. On reaching that region none is affected by sorrow or pain. It is the greatest region of Visnu where Dharma, Dhruva and other Sadhakas of the world stay.