Succah 5:6-7

Succah 5:6

On the first yom tov of Succos they offered 13 bulls, two rams and one male goat; 14 lambs were left over for the eight shifts of kohanim to offer. On the first day, six shifts brought two of these lambs each and the others brought one each. On the second day, five shifts brought two each and the others brought one each. On the third day, four shifts brought two each and the others brought one each. On the fourth day, three shifts brought two each and the others brought one each. On the fifth day, two shifts brought two each and the others brought one each. On the sixth day, one shift brought two and the others brought one each. On the seventh day, every shift brought the same: one each. [There were 24 shifts of kohanim. Some offered bulls, which decreased in number from 13 on the first day to seven on the seventh day. Any remaining shifts offered a ram or a goat.] On the eighth day, they drew lots, as they did on the Festivals. They said whoever brought a bull on one of the seven days would not do so on the next day. Rather, they took turns in order.

Succah 5:7

There were three times each year (i.e., the three Festivals) when all the shifts were equal in handling the Festival offerings and distributing the showbread. On Shavuos, they would give each participating kohein a piece of the showbread and a piece of the two loaves. The regularly-scheduled shift offered the daily sacrifices, vow offerings, freewill offerings and any other public sacrifices. If a yom tov fell either right before or right after Shabbos, all the shifts shared in distributing the showbread.