SB 4.18.27

एवं पृथ्वादयः पृथ्वीमन्नादाः स्वन्नमात्मनः ।
दोहवत्सादिभेदेन क्षीरभेदं कुरूद्वह ॥२७॥

evaṁ pṛthv-ādayaḥ pṛthvīm
annādāḥ svannam ātmanaḥ
doha-vatsādi-bhedena
kṣīra-bhedaṁ kurūdvaha

evam - thus; pṛthu-ādayaḥ - King Pṛthu and others; pṛthvīm - the earth; anna-adāḥ - all living entities desiring food; su-annam - their desired foodstuff; ātmanaḥ - for self-preservation; doha - for milking; vatsa-ādi - by calves, pots and milkers; bhedena - different; kṣīra - milk; bhedam - different; kuru-udvaha - O chief of the Kurus.

Text

My dear Vidura, chief of the Kurus, in this way King Pṛthu and all the others who subsist on food created different types of calves and milked out their respective eatables. Thus they received their various foodstuffs, which were symbolized as milk.

Purport

Srimad Bhagavatam. Canto 4: Creation of the Fourth Order

Chapter 18: Prithu Maharaja Milks the Earth Planet. Text 27

My dear Vidura, chief of the Kurus, in this way King Pṛthu and all the others who subsist on food created different types of calves and milked out their respective eatables. Thus they received their various foodstuffs, which were symbolized as milk.