Chabad.org — English translation + Rashi
Torah Temimah points to Zevachim 10b (unit 5; single primary locus per emergency Core plan).
E-Daf.com — Zevachim 10b
HebrewBooks / Shas PDF
English: “It is a chatas” — “it is” is said of the slaughter, to tell you: for its own sake it is valid; not for its own sake it is invalid.
Shechitah must be for the sake of chatas — if the nasi’s goat is slaughtered with intent for another offering-type, it is invalid.
The slaughter of the nasi’s chatas must be performed with explicit intent that it is a chatas. If the slaughterer intends an olah, shelamim, or any other type, the offering is invalidated. The verse’s “hu” at the stage of shechitah makes lishmah a condition of validity for this act.