תּוספֿתּא אויף ויקרא 16:6

Rabbi Shimon says, wherever the Torah says "calf" without any modifier (סתם), [it means] a one year-old, [as it is said] (Lev. 9:3), "and a calf and a lamb, [each] one year old." [Wherever it says] "a young of the herd," [it means] a two year-old, as it is said (Lev. 9:2), "Take for yourself a calf, a young of the heard, as a sin-offering, and a ram as a burnt-offering, temimim." Temimim [means] "whole" as to years, and "whole" from any blemish. Rabbi Yosei says, three atonements are effected from bulls, and three from rams, and three from goats. And the three from bulls: The bull that is brought for the [unwitting transgression of] any of the commandments (Lev. 4:2-4:3), the bull of Yom Kippur (Lev. 16:6), and the the calf whose neck is broken (Deut. 21:6). The three from rams: The certain guilt-offering and the suspended guilt-offering (Lev. 5:15-19), and the lamb brought by the individual (Lev. 4:32). The three from goats: The goat of the pilgrimage festivals (Num. 28:22-29:38), the goat of Yom Kippur (Lev. 16:10), and the goat of the "prince" (i.e., a euphemism for Azazel) (see Ramban to Lev. 16:8).

The bull of the anointed [priest] and the bull of the congregation (Hor. 3:6, Hor. 12b:20): the bull of the anointed [priest] precedes the bull of the congregation in all of its actions since the bull of the anointed [priest] atones and the congregation is atoned for. It is better for the one that atones to precede the one that is atoned for, as it says, “To make expiation for himself and for his household” (Lev 16:6). The bull that comes for every mitzvah precedes the bull and goat of idol worship and the bull and goal of idol worship precede the goat of the nasi and the goat of the nasi precedes the goat of the individual and the goat of the individual precedes the ewe of the individual. The two loaves precede the lambs. The omer precedes the lamb offered with it. This is the rule: The one that comes for the sake of the day comes before the one that comes for the sake of the bread.