Charak Samhita
एषामग्निबले हीने वृद्धिर्वृद्धे परिक्षयः। तस्मादग्निबलं रक्ष्यमेषु त्रिषु विशेषतः॥२४५॥
In all patients of above three diseases if the digestive power is low then disease gets aggravated and if digestive power is strong then relief occurs. So, the digestion power should be maintained in these three diseases to overcome them.
english translation
eSAmagnibale hIne vRddhirvRddhe parikSayaH। tasmAdagnibalaM rakSyameSu triSu vizeSataH॥245॥
hk transliteration by Sanscript