Astanga Hrudaya
मन्दवह्निमसंशुद्धमक्षामं दोषदुर्बलम्। अदृष्टजीर्णलिङ्गं च लङ्घयेत्पीतभेषजम्॥४४॥
On the day of consuming the purgation, If the patient has weak digestion strength (Mandagni), coated feeling in the gut, and if the digestion symptoms of previous food are not seen, the he should be made to fast.
english translation
mandavahnimasaMzuddhamakSAmaM doSadurbalam। adRSTajIrNaliGgaM ca laGghayetpItabheSajam॥44॥
hk transliteration by Sanscript