Bhagavatapurana 1.3.14

1.3.14

ṛṣibhiryācito bheje navamaṃ pārthivaṃ vapuḥ /
dugdhemām oṣadhīrviprāstenāyaṃ sa uśattamaḥ //

14. Prayed to by Rishis, He assumed the ninth form as King Prithu who made this (Earth) yield all the plants

and herbs, and who, on that account, has, O Brahmins, become the most beloved (of the world).