Midrasch zu Wajikra 3:17

2) (Vayikra 3:9): "its fat, the fat-tail": to include the fat near the fat-tail, the fat between the loin-sinews. These are the words of R. Akiva. R. Yehudah says: "its fat, the fat-tail": Just as (eating) fat comes under two interdicts ([Vayikra 3:17] "All fat and all blood you shall not eat," and [Vayikra 7:23] "All fat of ox or sheep or goat you shall not eat"), so, (eating the) fat of a (consecrated) fat-tail comes under two interdicts.

“Your belly is a pile of wheat,” this is the book of Leviticus. Just as the belly, the heart is on this side and the legs are on the other side and it is in the middle, so is the book of Leviticus, there are two on this side and two on that side and it is in the middle.²⁶Leviticus is the third of the five books of the Pentateuch. “A pile of wheat [ḥitim],” a pile of sins [ḥata’im];²⁷Leviticus details the laws of sin-offerings (Matnot Kehuna). “hedged with lilies,” these are matters of Torah, which are as soft as lilies. How many mitzvot and details are in the book of Leviticus, how many a fortiori inferences, instances of piggul²⁸An offering is disqualified if, in the course of the four sacrificial rites, one has the intent to sprinkle the blood or eat the flesh of the offering beyond its appointed time. Such an offering is called piggul. and instances of notar²⁹This is flesh that is left over after the appointed time for its consumption. there are in the book of Leviticus.
Rabbi Levi said: It is the way of the world that a man might marry a woman at the age of thirty or forty years. After he outlays all his expenditures, he comes to consummate his marriage with her; if she says to him: I saw [a spot] like a red lily,³⁰Menstrual blood. he separates from her immediately. Who caused him not to approach her? What iron wall is between them? What iron pillar is between them? What snake bit him? What scorpion stung him so that he would not approach her? [There is but] the words of the Torah, which are as soft as lilies, in which it is stated: “You shall not approach a woman in her state of menstrual impurity” (Leviticus 18:19).
Likewise, one before whom they brought a tray of pieces [of meat]; if they say to him: [A piece of] forbidden fat fell there, he withdraws his hand and does not taste it. Who caused him to refrain from tasting? What snake bit him so that he would not taste it? What scorpion stung him so that he would not approach and taste it? The words of the Torah, which are as soft as lilies, in which it is written: “You shall not consume any fat or any blood” (Leviticus 3:17).

3) ("And he shall present …) the fat that covers the innards and all the fat that is on the innards": (This is written five times.) What is the intent of this? Because it is written (Ibid. 3:16): ("And the Cohein shall smoke …) all the fat for the L–rd. (17): … All fat and all blood you shall not eat… (Vayikra 7:25): For all who eat fat of the beast of which one presents a fire-offering to the L–rd, the soul that eats shall be cut off from its people" — I might think that even the wall-fat (the fat of the heart, the chest, and the throat) is included (in the interdict against eating fat); it is, therefore, written: "the fat that covers the innards (the entrails)." I might think that it (eating wall-fat) is not subject to the punishment (kareth), but that it is subject to the exhortation; it is, therefore, written (again): "the fat that covers the innards." would then exclude only the (wall-) fat of chullin, but not that of a consecrated animal; it is, therefore, written (again): "the fat that covers the innards" (i.e., only that fat is intended.) I might think that it (eating the wall-fat of a consecrated animal) is not subject to the punishment, but that it is subject to the exhortation; it is, therefore, written (again): "the fat that covers the innards." I might think that it is not subject to the exhortation and that it is subject to sacrifice (if he so wishes, even though he may eat it); it is, therefore, written (for the fifth time): "the fat that covers the innards" (Only that fat is to be sacrificed.)