The Sages asked Sutji as to how Dhruva became successful in attaining immortality and supreme status among all the stars.
Sutji narrated the following tale--- There lived a king named Uttanpad, who had two queens--Suniti and Suruchi. The eldest queen Suniti had a son named Dhruva. One day while Dhruva was sitting in his father's lap, Suruchi--his step mother, contemptuously pulled him from Uttanpad's lap and made her own son sit in his place. Dhruva went to Suniti and complained about his steps mother's behaviour.
Suniti advised Dhruva that he should seek for the supreme status, which is permanent. Following his mother's advice, Dhruva went to the forest in search of that supreme status. In the forest, he met Sage Vishwamitra who advised him to seek the blessings of Lord Keshav by chanting the sacred mantra 'Om Namo Bhagwate Vasudevay'.
Dhruva did an austere penance. In just six month, Lord Vishnu became pleased and appeared before him mounted on Garuda. Lord Vishnu touched Dhruva's face with his conch as a result of which he attained Self knowledge. Lord Vishnu blessed Dhruva by saying --- I give you the supreme place, which even the deities and the sages long for. This way, Dhruva attained a supreme status among all the stars with the blessings of Lord Vishnu.
-Linga Puran