Leviticus 4:25, 30

The priest must take some of the blood of the sin offering on his finger and put it on the corners of the altar of burnt offering. He must pour out the rest of the blood at the bottom of the altar of burnt offering.

Then the priest must take some of the goat’s blood on his finger and put it on the corners of the altar of burnt offering. He must pour out the rest of the goat’s blood at the bottom of the altar.