וְאֶת־הָאַ֔יִל נִתַּ֖ח לִנְתָחָ֑יו וַיַּקְטֵ֤ר מֹשֶׁה֙ אֶת־הָרֹ֔אשׁ וְאֶת־הַנְּתָחִ֖ים וְאֶת־הַפָּֽדֶר׃
Y cortó el carnero en trozos; y Moisés hizo arder la cabeza, y los trozos, y el sebo.
Ibn Ezra
the fats Many contemporary scholars have understood this word to mean “the carcass”. In my opinion, the word denotes suet. Thus: The sons of Aaron, the kohanim, will arrange the limbs — the pieces of the body; [and] the head, and the fats — i.e., the suet. Also: “He will carve it into its limbs” [:12] — and these limbs of the carcass include “its head and its fats” [:12] (or, perhaps, the phrase means “ with its head and its fats”, following common Hebrew idiom — but conclusive evidence to the contrary appears in “Moshe kindled the head, and the pieces, and the fats” [8:20]).