Manasara 6.28

6.28

madhye daśadine vahni cāntyapaṅkti catustyajet
kulīre prathamadaśake vedamātraṃ visarjayet

in the middle ten days, three [digits]; and in the final ten-day period, he should discard four; / in Cancer, in the first ten days, he should discard four digits;