Charak Samhita
यं नरं सहसा रोगो दुर्बलं परिमुञ्चति। संशयप्राप्तमात्रेयो जीवितं तस्य मन्यते ॥१५॥
If in any disease, patient deteriorates all of a sudden, his survival is doubtful as told by Atreya.
english translation
yaM naraM sahasA rogo durbalaM parimuJcati। saMzayaprAptamAtreyo jIvitaM tasya manyate ॥15॥
hk transliteration by Sanscript