Charak Samhita
दर्शनं पक्तिरूष्मा च क्षुत्तृष्णा देहमार्दवम्। प्रभा प्रसादो मेधा च पित्तकर्माविकारजम् ॥५०॥
॥ Functions of normal pitta dosha॥ Vision, digestion, (production of) heat, hunger, thirst, softness in body, luster, serenity and intelligence are the normal functions of pitta.
english translation
darzanaM paktirUSmA ca kSuttRSNA dehamArdavam। prabhA prasAdo medhA ca pittakarmAvikArajam ॥50॥
hk transliteration by Sanscript