Charak Samhita
स्वस्थानस्थो बली दोषः प्राक् तं स्वैरौषधैर्जयेत् । वमनैर्वा विरेकैर्वा बस्तिभिः शमनेन वा ॥१९८॥
A morbid humor, while in its natural habitat, and when more powerful; it should be first subdued by its own suitable medications such as emesis, purgation, enema or sudation.
english translation
svasthAnastho balI doSaH prAk taM svairauSadhairjayet । vamanairvA virekairvA bastibhiH zamanena vA ॥198॥
hk transliteration by Sanscript