Chabad.org — English translation + Rashi
Torah Temimah points to Zevachim 52a.
E-Daf.com — Zevachim 52a
HebrewBooks / Shas PDF
English: “The base of the burnt-offering altar” — and not the base of the inner altar.
Miyut of inner altar’s base — residual blood is poured at the outer altar’s base, not the incense altar’s.
Residual blood is poured at the outer altar’s base, not the incense altar’s. The verse’s explicit reference to the “base of the olah altar” is taken to exclude the base of the inner incense altar. The final disposal of blood therefore occurs outside, at the foundation of the sacrificial altar that stands before the Tent of Meeting.