NUM 29:17

17 “For the next six days of the festival, you must also bring animals to sacrifice. On the second day, bring twelve bulls. On the third/next day, bring eleven bulls. One the fourth/next day, bring ten bulls. On the fifth/next day, bring nine bulls. On the sixth/next day, bring eight bulls. On the seventh/last day, bring seven bulls. But on each of those days, all the other sacrifices and offerings that you bring will remain the same.