Aṣṭāṅgahṛdayasaṃhitā

karketanaṃ marakataṃ vajraṃ vāraṇamauktikam||90||
vaiḍhūryaṃ gardabhamaṇiṃ picukaṃ viṣamūṣikām||91||
himavadgirisambhūtāṃ somarājīṃ punarnavām||91||
tathā droṇāṃ mahādroṇāṃ mānasīṃ sarpajaṃ maṇim||92||
viṣāṇi viṣaśāntyarthaṃ vīryavanti ca dhārayet||92||