Reference for Chullin 70:47

דם מגפתו איצטריכא ליה ס"ד אמינא

- The latter verse is stated in order to permit for general use the blood of consecrated animals which were rendered unfit [for sacrifice].<span class="x" onmousemove="('comment',' By reason of a blemish and have been redeemed; they are now regarded as common food, and their blood may be put to general use like water, except that it may not be eaten.');">¹⁸</span>

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