Shiva Purana
आयुर्वेदविदो वैद्यास्त्वनुष्ठितरसायनाः ॥ न मृत्युमतिवर्तंते कालो हि दुरतिक्रमः ॥ १४ ॥
Physicians well-versed in medicines regularly taking in elixirs and aphrodisiacs do not thwart death. Indeed Kāla is untransgressable.
english translation
Ayurvedavido vaidyAstvanuSThitarasAyanAH ॥ na mRtyumativartaMte kAlo hi duratikramaH ॥ 14 ॥
hk transliteration by Sanscript