Rashi on Leviticus 4:26/רש"י על ויקרא ד׳:כ״ו

1כחלב זבח השלמים [AND HE SHALL CAUSE ALL ITS FAT TO ASCEND IN FUMES], AS THE FAT OF THE SACRIFICE OF PEACE OFFERINGS — i. e. as those fat portions which are specified in the case of the goat that is mentioned among the peace-offerings (Leviticus 3:14, 15).