Udyoga Parva, Adhyāya 101: Bhogavatī-varṇana, Nāga-vaṃśa-kathana, and Sumukha-vivāha-prastāva
पूर्वकालमें जब ब्रह्मा अमृतपान करके तृप्त हो उसका सारभाग अपने मुखसे निकाल रहे थे, उसी समय उनके मुखसे अनिन्दिता सुरभिका प्रादुर्भाव हुआ था ।। यस्या: क्षीरस्य धाराया निपतन्त्या महीतले । हृदः कृत: क्षीरनिधि: पवित्र परमुच्यते,पृथ्वीपर निरन्तर गिरती हुई उस सुरभिके क्षीरकी धारासे एक अनन्त हृद बन गया, जिसे 'क्षीरसागर” कहते हैं। वह परम पवित्र है
pūrvakāle yadā brahmā amṛtapānaṃ kṛtvā tṛpto bhūtvā tasya sārabhāgaṃ mukhāt niṣkāsayan āsīt, tadā tasya mukhāt aninditā surabhikā prādurbabhūva. yasyāḥ kṣīrasya dhārāyā nipatantyā mahītale hṛdaḥ kṛtaḥ kṣīranidhiḥ pavitraḥ param ucyate.
Nārada said: In ancient times, when Brahmā, having drunk the nectar and become satisfied, was expelling its concentrated essence from his mouth, at that very moment the blameless Surabhī manifested from his mouth. From the stream of her milk that fell unceasingly upon the earth, an immeasurable basin was formed—a vast reservoir of milk, spoken of as the “Ocean of Milk” (Kṣīra-sāgara); it is declared supremely pure.
नारद उवाच
The passage frames sacred purity and abundance as arising from divine sources: Surabhī’s milk creates the supremely pure ‘Ocean of Milk,’ suggesting that what is connected to the divine (amṛta, Surabhī) becomes a purifier and a sustaining reservoir for the world.
Nārada recounts a primordial event: after Brahmā drinks nectar and expels its essence, Surabhī manifests from his mouth. Her milk falls upon the earth and forms an immense basin, identified as the Kṣīrasāgara (Ocean of Milk), renowned for its exceptional purity.