Ramayana
देवानां मध्यतः स्थित्वा ममन्थ पुरुषोत्तमः। अथ वर्षसहस्रेण आयुर्वेदमयः पुमान्॥ १-४५-३१
- and thus staying amid gods that Supreme Person Vishnu participated in churning the ocean by holding the stirring mountain upright. After a thousand years of churning, then a male personality, an epitome of Life Sciences, namely aayurveda - ॥ 1-45-31॥
english translation
devAnAM madhyataH sthitvA mamantha puruSottamaH। atha varSasahasreNa AyurvedamayaH pumAn॥ 1-45-31
hk transliteration by Sanscript