Charak Samhita
चिरकालपरिक्लिष्टं दुर्बलं हीनतेजसम् [१] । अचिरेणैव कालेन स हन्ति पुनरागतः ॥३३५॥
As such patients have already suffered for a long time; hence there is weakness and loss of vitality in the tissues. If the fever reappears in them and then this certainly leads to their death.
english translation
cirakAlaparikliSTaM durbalaM hInatejasam [1] । acireNaiva kAlena sa hanti punarAgataH ॥335॥
hk transliteration by Sanscript