Torah Temimah cites Toras Kohanim (Sifra, Vayikra Dibbura DeChovah, Section 10:3).
Sefaria — Toras Kohanim (Sifra, Vayikra Dibbura DeChovah, Section 10:3)
“And he shall bring his asham” — even if he has not yet confessed.
Miyut of dependence — the korban remains valid even without prior vidui; the two requirements are independent for validity purposes.
One may still bring the asham / oleh ve-yored even if confession has not yet been recited. The offering’s validity is not contingent on prior vidui. Confession remains a separate obligation that must eventually be fulfilled, but its absence at the moment of bringing does not invalidate the korban itself.