Bhagavata Purana 4.22.59

Mahārāja Pṛthu’s intelligence and education were exactly like that of Yamarāja, the superintendent of death. His opulence was comparable to the Himālaya Mountains, where all valuable jewels and metals are stocked. He possessed great riches like Kuvera, the treasurer of the heavenly planets, and no one could reveal his secrets, for they were like the demigod Varuṇa’s.