Charak Samhita
दीप्ताग्नयःखराहाराःकर्मनित्यामहोदराः। येनराःप्रतितांश्चिन्त्यंनावश्यंगुरुलाघवम् ॥३४४॥
For those whose agni is strong, are accustomed to tough-to-digest food articles, are accustomed to hard labor and have a large capacity for consumption and digestion of food, the consideration of heavy and light food is not necessary.
english translation
dIptAgnayaHkharAhArAHkarmanityAmahodarAH। yenarAHpratitAMzcintyaMnAvazyaMgurulAghavam ॥344॥
hk transliteration by Sanscript