Aṣṭāṅgahṛdayasaṃhitā

atha trivṛcchyāmayoḥ kalpaḥ||1||
kaṣāyamadhurā rūkṣā vipāke kaṭukā trivṛt||1||
kaphapittapraśamanī raukṣyāccānilakopanī||1||