“On the wall of the altar” — and not on the wall of the ramp, and not on the wall of the heikhal, and not on the wall of the ulam.
Type of Learning: Miyut of location: the phrase “kir ha-mizbe’ach” excludes every other vertical surface in the Temple complex.
What Is Learned: The bird-chatas blood may be sprinkled only on the outer altar’s wall. Sprinkling on the ramp, the Sanctuary wall, or the porch wall does not fulfill the commandment.