Charak Samhita
दुर्बलो बहु भुङ्क्ते यः प्राग्भुक्तादन्नमातुरः । अल्पमूत्रपुरीषश्च यथा प्रेतस्तथैव सः ॥२२॥
Consumption of excess quantity of food by weak patient but passes scanty urine and stool should be considered as ghost or almost dead.
english translation
durbalo bahu bhuGkte yaH prAgbhuktAdannamAturaH । alpamUtrapurISazca yathA pretastathaiva saH ॥22॥
hk transliteration by Sanscript