Leviticus 8:13-16

¹³And after he had offered his sons, he vested them with linen tunicks, and girded them with girdles, and put mitres on them as the Lord had commanded.

¹⁴He offered also the calf for sin: and when Aaron and his sons had put their hands upon the head thereof,

¹⁵He immolated it: and took the blood, and dipping his finger in it, he touched the horns of the altar round about. Which being expiated, and sanctified, he poured the rest of the blood at the bottom thereof.

¹⁶But the fat that was upon the entrails, and the caul of the liver, and the two little kidneys, with their fat, he burnt upon the altar: