Vishnupurana 1.11.29

1.11.29

parāśara uvāca:
nirjagāma gṛhān mātur ity uktvā mātaraṃ dhruvaḥ
purāc ca nirgamya tatas tadbāhyopavanaṃ yayau //

Having thus spoken, Dhruva went forth from his mother's dwelling: he quitted the city, and entered an adjoining thicket, where he beheld seven Munis sitting upon hides of the black antelope, which they had taken from off their persons, and spread over the holy kusa grass. Saluting them reverentially, and bowing humbly before then, the prince said, "Behold in me, venerable men, the son of Uttánapáda, born of Suníti. Dissatisfied with the world, I appear before you." The Rishis replied; "The son of a king, and but four or five years of age, there can be no reason, child, why you should be dissatisfied with life; you cannot be in want of any thing whilst the king your father reigns; we cannot imagine that you suffer the pain of separation from the object of your affections; nor do we observe in your person any sign of disease. What is the cause of your discontent? Tell us, if it is known to yourself."