Charak Samhita
यस्तु दोषविकल्पज्ञो यश्चौषधिविकल्पवित् । स साध्यान्साधयेद्व्याधीन् साध्यासाध्यविभागवित् ॥१९०॥
One who understands permutations and combinations of dosha, medicines, and prognosis can differentiate between curable and non-curable diseases and treat.
english translation
yastu doSavikalpajJo yazcauSadhivikalpavit । sa sAdhyAnsAdhayedvyAdhIn sAdhyAsAdhyavibhAgavit ॥190॥
hk transliteration by Sanscript