Bhaishajyaratnavali 4.42

Bhaiṣajyaratnāvalī (ed. Rājeśvaradatta Śāstrī) 4.42

nāḍījihvā''syamūtrāṇāṃ parīkṣāṃ yo na vindati
mārayatyāśu jantūn hi sa vaidyo yama eva hi