וְאֶת־הָעֹלָ֗ה הִמְצִ֧יאוּ אֵלָ֛יו לִנְתָחֶ֖יהָ וְאֶת־הָרֹ֑אשׁ וַיַּקְטֵ֖ר עַל־הַמִּזְבֵּֽחַ׃
And they delivered the burnt-offering unto him, piece by piece, and the head; and he made them smoke upon the altar.
Read kabbalistic (mystical) interpretation of Leviticus 9:13: and classical mystical sources.