Bhagavatapurana 4.9.5

4.9.5

sa vai tadaiva pratipāditāṃ giraṃ daivīṃ parijñāta-parātma-nirṇayaḥ /
taṃ bhakti-bhāvo 'bhyagṛṇād asatvaraṃ pariśrutoru-śravasaṃ dhruva-kṣitiḥ //

5. Thus the child Dhruva to whom a permanent place was reserved, had at once the divine speech conferred on him and, having truly and conclusively known the nature of Paramatman and Jivas and being full of devotion and love, calmly sang the praises of the Lord whose unlimited glory is known everywhere.