Charak Samhita
सनागरं पिबेत् पित्तं तथाऽस्यैति स्वमाशयम्। कटुतीक्ष्णोष्णलवणैर्भृशाम्लैश्चाप्युपक्रमः॥१३०॥
Katu (pungent), teekshna (sharp), ushna (hot), lavana (saline) and extremely amla (sour) drugs should be continued till the stool of the patient acquires the color of pitta and the vata gets alleviated.
english translation
sanAgaraM pibet pittaM tathA'syaiti svamAzayam। kaTutIkSNoSNalavaNairbhRzAmlaizcApyupakramaH॥130॥
hk transliteration by Sanscript