וְאֶת־הָאַ֔יִל נִתַּ֖ח לִנְתָחָ֑יו וַיַּקְטֵ֤ר מֹשֶׁה֙ אֶת־הָרֹ֔אשׁ וְאֶת־הַנְּתָחִ֖ים וְאֶת־הַפָּֽדֶר׃
dépeça le bélier par quartiers, et réduisit en fumée la tête, les membres et la graisse.
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]).