Shiva Purana
सप्तस्वपि च वारेषु दशभ्यश्च दशांगकम् । अन्नं दत्त्वा शतं वर्षमारोग्यादिकमश्नुते ३१ ।
If in this manner he gives food on all the seven days to ten brahmins he secures good health and all other benefits for a hundred years.
english translation
saptasvapi ca vAreSu dazabhyazca dazAMgakam । annaM dattvA zataM varSamArogyAdikamaznute 31 ।
hk transliteration by Sanscript