Charak Samhita
अमृतार्थं समुद्रे तु मथ्यमाने सुरासुरैः । जज्ञे प्रागमृतोत्पत्तेः पुरुषो घोरदर्शनः ॥४॥
॥ History of origin of visha॥ While the ocean was being churned by devas and asuras for obtaining amrita (nectar of life), before the formation of amrita a ferocious looking person with fiery eyes, four fangs and greenish locks emerged.
english translation
amRtArthaM samudre tu mathyamAne surAsuraiH । jajJe prAgamRtotpatteH puruSo ghoradarzanaH ॥4॥
hk transliteration by Sanscript