Ashtangasamgraha 41.71

41.71

tūrṇaṃ deśāntarāyātāṃ vimuktaviṣakañcukāḥ |

kuśauṣadhīkaṇṭakavadye caranti ca kānanam |

deśaṃ ca vidyādhyuṣitaṃ sarpāstelpaviṣā matāḥ ||

that have quickly migrated to another region, have cast off their venomous slough,
that roam through forests with kuśa grass, medicinal plants, and thorns,
and live in a land inhabited by sorcerers, are considered to have little venom.