Reference for Pesachim 147:10
נימא מסייע ליה נותן את כרעיו ואת בני מעיו לתוכו מ"ט לאו משום דאמרינן כבולעו כך פולטו אמרי שאני התם כיון דאיכא בית השחיטה דמחלחל
Now that you say that if a limb was cut from it, even if he roasted it together with it, it is not [a helmeted goat], [if a limb is] boiled need it [be stated]?<span class="x" onmousemove="('comment',' Surely it is superfluous.');"><sup>15</sup></span> - Said R'Shesheth: It means that he boiled it while attached [to the whole animal]. Rabbah said: A stuffed [lamb]<span class="x" onmousemove="('comment',' I.e., the lamb being stuffed with meat salted only enough for roasting, which is less than is required by law when it is to be boiled (Rashi) . Blood in flesh is forbidden, hence the prescribed, process of soaking and salting in order to draw it out.');"><sup>16</sup></span> is permitted. Said Abaye to him: But [the lamb] absorbs the blood?<span class="x" onmousemove="('comment',' Which exudes from the pieces of meat with which it is stuffed when the whole is roasted.');"><sup>17</sup></span> As it absorbs, so it exudes, he answered him.<span class="x" onmousemove="('comment',' It exudes on the outside the same amount of blood which it first absorbs on the inside.');"><sup>18</sup></span> Shall we say that this supports him: AND [WE] PLACE ITS KNEES AND ITS ENTRAILS INSIDE IT: what is the reason? Is it not because we say, as it absorbs, so it exudes? - I will tell you: it is different there, [for] since there is the place of slaughtering, which is hollo