Related for Chullin 186:13
אומצי ביעי ומזרקי פליגי בה רב אחא ורבינא
if it was cut up and salted, it is even permitted [to be cooked] in a pot; if it was thrust on a spit [an held over the fire], the blood would easily flow out; if it was placed on the coals, in this there is a dispute between R'Aha and Rabina: one says that they [the coals] would draw out the blood, and the other says that they would cause [the meat] to contract.<span class="x" onmousemove="('comment',' So that the blood would not flow out and it is therefore forbidden.');"><sup>6</sup></span>
Jerusalem Talmud Demai
Rebbi Eleazar in the name of Rebbi Hoshaiah: It is a condition imposed by the Court that the fat206That fat of a four-legged animal, which in a sacrifice would go on the altar, is forbidden for profane use (Lev. 3:17). It has to be cut out before the piece of meat is sold. be on the butcher and the sciatic tendon207It may not be eaten (Gen. 32:33). It must be cut out together with all the fat in which it is embedded. The butcher would naturally cut out only the minimum of fat in order to maximize his profit. on the buyer. Rebbi Abbahu made it common usage in Caesarea that both should be on the buyer, so that they would amply take out.
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