Bhagavatapurana 9.5.26

9.5.26

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athāmbarīṣastanayeṣu rājyaṃ samānaśīleṣu visṛjya dhīraḥ /
vanaṃ viveśātmani vāsudeve mano dadhaddhvastaguṇapravāhaḥ //

26. Later on, the wise and heroic Ambarisha entrusted the kingdom to his sons who were of the same nature and disposition as he himself, and having set at naught the current of gunas, retired to the forest and concentrated his mind on Vasudeva, Atman of all.