Chabad.org — English translation + Rashi
Torah Temimah points to Toras Kohanim (Sifra), Vayikra Dibbura DeChovah, on 4:26 (ve-nislach lo — nothing left for Yom Kippur) (unit 7; single primary locus per emergency Core plan).
Sefaria — Sifra / Toras Kohanim, Vayikra Dibbura DeChovah
English: “And it shall be forgiven him” — nothing is left over for him for Yom Kippur.
Complete forgiveness; no holdover to Yom Kippur — once the nasi’s chatas effects kapparah, nothing of that sin remains for Yom Kippur.
When the nasi’s chatas has effected its kapparah, the specific sin for which it was brought is fully resolved. Nothing of that liability is deferred to the atonement of Yom Kippur. The verse’s language of complete forgiveness precludes any residual carry-over of that particular shegagah.