Pesachim 22A

אותו אתה משליך לכלב, ואי אתה משליך לכלב כל איסורין שבתורה. ורבי מאיר? אותו אתה משליך לכלב, ואי אתה משליך לכלב חולין שנשחטו בעזרה.

The Talmud concludes: It, i.e., a tereifa, you may throw to a dog, but you may not throw all other items prohibited by Torah law to a dog, as both eating and deriving benefit are prohibited. The Talmud asks: And what halakha does R' Meir learn from this verse? The Talmud answers that R' Meir draws the following inference: It, you may throw to a dog, but you may not throw the meat of a non-sacred animal that was slaughtered in the Temple courtyard to a dog, as it is prohibited to benefit from it.

ואידך? חולין שנשחטו בעזרה לאו דאורייתא היא.

And from where does the other Sage, R' Yehuda, learn this halakha about non-sacrificial meat that was slaughtered in the Temple courtyard? The Talmud answers: He holds that the prohibition of deriving benefit from the meat of a non-sacrificial animal that was slaughtered in the courtyard is not by Torah law; rather, the rabbis decreed that it is prohibited. Since it is not prohibited by Torah law, no verse is necessary.

מתיב רבי יצחק נפחא: והרי גיד הנשה, דרחמנא אמר: ״על כן לא יאכלו בני ישראל את גיד הנשה״, ותנן: שולח אדם ירך לגוי, וגיד הנשה בתוכו, מפני שמקומו ניכר!

R' Yitzḥak Nappaḥa raised an objection: And yet there is still the prohibition of the sciatic nerve, as God says: “Therefore the children of Israel may not eat the sciatic nerve” (Genesis 32:33), and we learned in a Mishnah: A person may send the thigh of an animal to a non-Jew as a gift with the sciatic nerve inside it, he is not required to remove it. This is due to the fact that its place is clear, and it is obvious that this nerve has not been removed. Therefore, there is no concern that another Jew will assume that the first Jew removed this portion of the animal, which might cause him to accidentally eat the sciatic nerve. Apparently, one may benefit from this prohibited portion of the animal even though the verse says that one may not eat it.