Chabad.org — English translation + Rashi
Torah Temimah points to Zevachim 37b (unit 5; single primary locus per emergency Core plan).
E-Daf.com — Zevachim 37b
HebrewBooks / Shas PDF
English: “On the horns” — the repeated wording includes all four horns.
All four horns of the outer altar — blood of the nasi’s chatas is applied to each of the four horns of the olah altar.
The kohen must place blood on all four horns of the outer altar. Application to fewer than four does not complete the requirement. The doubled language of the verse is the source of the inclusive count.