Charak Samhita
मृदुतीक्ष्णगुरुलघुस्निग्धरूक्षोष्णशीतलम्। वीर्यमष्टविधं केचित्, केचिद्द्विविधमास्थिताः ॥६४॥
Some hold that there is eight-fold veerya: mridu (soft), tikshna (sharp), guru (heavy), laghu (light), snigdha (unctuous), ruksha (rough), ushna (hot) and sheeta (cold) while some opine that there are only two veeryas : sheeta (cold) and ushna (hot).
english translation
mRdutIkSNagurulaghusnigdharUkSoSNazItalam। vIryamaSTavidhaM kecit, keciddvividhamAsthitAH ॥64॥
hk transliteration by Sanscript