Leviticus 16:6 specifies the bull as a sin offering for the high priest; the fat of that bull is burned on the altar in verse 25.

Leviticus 4:8-10 gives the detailed procedure for burning the fat of a sin offering; the same procedure is applied in verse 25.

Leviticus 4:19 commands burning the fat of a sin offering for a leader; verse 25 applies the same instruction to the Day of Atonement sin offering.

Exodus 29:13 instructs burning fat during priestly consecration; verse 25 does the same for the Day of Atonement sin offering, following the same pattern.