Astanga Hrudaya
यदन्नं देहधात्वोजोबलवर्णादिपोषणम्। तत्राग्निर्हेतुराहारान्न ह्यपक्वाद्रसादयः॥५४॥
ojas, strength, colour (and complexion) etc., is really made so by the agni, which is the cause for its digestion; rasa and others (tissues) do not get formed and nourished by uncooked (undigested) food
english translation
yadannaM dehadhAtvojobalavarNAdipoSaNam। tatrAgnirheturAhArAnna hyapakvAdrasAdayaH॥54॥
hk transliteration by Sanscript