Charak Samhita
जङ्गमस्थावरायां तद्योनौ ब्रह्मा न्ययोजयत् । तदम्बुसम्भवं तस्माद्द्विविधं पावकोपमम् ॥६॥
॥ Sources of poison॥ Lord Brahma deposited these visha in jangama(animal origin) and sthavara (earthen and plant origin) categories. Hence in general visha, originated from water; it is (hot) like fire and is of two types.
english translation
jaGgamasthAvarAyAM tadyonau brahmA nyayojayat । tadambusambhavaM tasmAddvividhaM pAvakopamam ॥6॥
hk transliteration by Sanscript