Imamat 3:5

3:5 Then the sons of Aaron must offer it up in smoke on the altar atop the burnt offering that is on the wood in the fire as a gift of a soothing aroma to the Lord. ¹ 

Imamat 7:31

7:31 and the priest must offer the fat up in smoke on the altar, but the breast will belong to Aaron and his sons.

[3:5]  ¹ tn Or “on the fire – [it is] a gift of a soothing aroma to the Lord” (see Lev 1:13b, 17b, and the note on 1:9b).