Chullin 185
הכא נמי שעל הכליות אמר רחמנא ולא שבתוך הכליות גופא אמר רבי אבא אמר רב יהודה אמר שמואל
It is evident therefore that the Divine Law spoke of that which is 'upon the loins'<span class="x" onmousemove="('comment',' In connection with sacrifices, e.g., Lev. III, 4. The prohibition of fat applies only to such fat as was burnt in a sacrifice on the altar.');"><sup>1</sup></span>
חלב שהבשר חופה אותו מותר
and not of that which is in the loins; likewise here, the Divine Law spoke of that which is 'above the kidneys'<span class="x" onmousemove="('comment',' In connection with sacrifices, e.g., Lev. III, 4. The prohibition of fat applies only to such fat as was burnt in a sacrifice on the altar.');"><sup>1</sup></span>
בהמה בחייה פרוקי מיפרקא
But this cannot be, for has not R'Abba also said in the name of Rab Judah on the authority of Samuel that the fat which is under the loins is forbidden?<span class="x" onmousemove="('comment',' Although this fat is covered by the loins.');"><sup>2</sup></span>
אמר ר' יוחנן
Abaye answered: An animal whilst alive has its limbs dislocated.<span class="x" onmousemove="('comment',' When the animal is in motion its limbs and muscles slip away from their normal positions and are temporarily dislocated. Consequently the fat under the loins is not always covered with flesh, and it is therefore forbidden.');"><sup>3</sup></span>
אנא לאו טבחא אנא ולאו בר טבחא אנא ונהירנא דהכי הוו אמרי בי מדרשא
Even as R'Johanan said: 'I am no butcher nor the son of a butcher, but I remember this statement that was generally quoted in the Beth-Hamidrash, "An animal whilst alive has its limbs dislocated"'.
בהמה בחייה פרוקי מיפרקא
R'Abba said in the name of Rab Judah who said it in the name of Samuel: The fat which is upon the omasum and reticulum is forbidden and one is liable to the penalty of Kareth on account of it; this is the fat that is 'upon the in wards'.<span class="x" onmousemove="('comment',' Referred to frequently in Scripture in connection with sacrifices, e.g., Lev. III, 3.');"><sup>4</sup></span>
אמר רבי אבא אמר רב יהודה אמר שמואל
R'Abba further said in the name of Rab Judah who said it in the name of Samuel: The fat which is upon the innominate bone<span class="x" onmousemove="('comment',' I.e., the hip-bone. According to Rashi the text refers to the sacrum. V. Katzenelsohn, p. 269, n. 2.');"><sup>5</sup></span>
חוטין שביד אסורין
But if it [the fore-limb] was cut and salted it may even [be cooked] in a pot.<span class="x" onmousemove="('comment',' The veins in the fore-limb are forbidden only on account of the blood contained in them; if therefore the meat was cut up and the veins cut too, it is permitted for all purposes.');"><sup>7</sup></span>
אמר רב ספרא
Rab Judah said in the name of Samuel: [The fat upon] the first cubit of the intestines must be scraped away; this is the fat upon the intestines.<span class="x" onmousemove="('comment',' About which there was a dispute between R. Akiba and R. Ishmael, v. supra 49b.');"><sup>8</sup></span>
ואמר רב יהודה
The veins in the spleen, in the loins and in the kidneys are forbidden on account of fat; those in the fore-limb and in the cheeks on account of blood.<span class="x" onmousemove="('comment',' The arteries of the neck, i.e., the carotid arteries, are certainly forbidden because of their blood; here however only the minor veins are reckoned.');"><sup>11</sup></span>
חמשא חוטי אית ביה בכפלא תלתא מימינא ותרתי משמאלא תלתא מפצלי לתרי תרי תרי מפצלי לתלתא תלתא
R'Kahana (others say: Rab Judah) said: There are five membranes, three are forbidden on account of fat, and two on account of blood; that of the spleen, the loins, and the kidneys is forbidden on account of fat; that of the testicles and of the brain on account of blood.
נפקא מינה דאי שליף להו עד דחמימי משתלפי ואי לא בעי חטוטי בתרייהו
R'Judah B'Oshaia was once scraping [the fat from] the spleen for Levi the son of R'Huna B'Hiyya, and was cutting away [the fat] only at the upper end,<span class="x" onmousemove="('comment',' At the thick part, i.e., the area of attachment to the rumen.');"><sup>12</sup></span>
חמשא חוטי הוו
When his father came and found him doing this, he said: Thus said your mother's father (that is, R'Jeremiah B'Abba) in the name of Rab: The Torah forbade only [the fat] at the top.<span class="x" onmousemove="('comment',' Lit., 'on the breast'; i.e., the membrane which lies over the thick part of the spleen. thb, thb, ht');"><sup>13</sup></span>
הני דמשום דמא אי מחתך להו ומלח להו שפיר דמי הנך לית להו תקנתא
It must therefore mean the fat over the whole [of the spleen]! - He replied: If it was so taught then it was taught.<span class="x" onmousemove="('comment',' But I shall not alter my opinion on account of it. V. Rashi Nid. ');"><sup>14</sup></span>
רב יהודה בר אושעיא הוה קא קליף ליה טחלא ללוי בריה דרב הונא בר חייא הוה קא גאים ליה מעילאי
But it has been taught: One is liable on account of it!<span class="x" onmousemove="('comment',' Both with regard to the spleen and the kidney.');"><sup>15</sup></span>
חות ביה טפי
And with regard to the kidney there is no contradiction because the latter ruling refers to the upper membrane<span class="x" onmousemove="('comment',' This is absolutely forbidden and entails the penalty of kareth.');"><sup>16</sup></span>