1. Leviticus 16:12 (ESV)
  2. Exposition

What was done to the ashes of the bull?

Leviticus 16:12 (ESV)

12 And he shall take a censer full of coals of fire from the altar before the LORD, and two handfuls of sweet incense beaten small, and he shall bring it inside the veil

Aaron was required to take a censer (literally, a small pan) full of coals into the Holy of Holies.