Chabad.org — English translation + Rashi
Torah Temimah points to Toras Kohanim (Sifra), Vayikra Dibbura DeChovah, on 4:8 (yarim mimenu — from the attached) (unit 2; single primary locus per emergency Core plan).
Sefaria — Sifra / Toras Kohanim, Vayikra Dibbura DeChovah
English: “He shall remove from it” — from it, from what is still attached.
Order of emurim removal — the fat is lifted while still attached to the animal, before further dismemberment.
The fat of the chatas bull is removed while it remains joined to the body. The Sifra’s reading of “mimenu” as “from the attached” precludes waiting until after the animal has been fully disjointed. The order protects the integrity of the offering parts that are destined for the altar.