Charak Samhita
आहारस्य विधावष्टौ विशेषा हेतुसञ्ज्ञकाः। शुभाशुभसमुत्पत्तौ तान् परीक्ष्य प्रयोजयेत् ॥४२॥
Eight special factors are to be considered while consuming food. These factors should be evaluated before consuming food, as they are responsible for good and bad effects on the body.
english translation
AhArasya vidhAvaSTau vizeSA hetusaJjJakAH। zubhAzubhasamutpattau tAn parIkSya prayojayet ॥42॥
hk transliteration by Sanscript