Leviticus 3:14-16

Common English Bible

¹⁴ Then you may present as your offering—a food gift for the Lord—the fat that covers and surrounds the insides; ¹⁵ the two kidneys and the fat around them at the loins; and the lobe on the liver, which should be removed with the kidneys. ¹⁶ The priest will then completely burn all of this on the altar as food—as a food gift for a soothing smell.

All fat belongs to the Lord.