Numbers 29:1-2

1‘On the first day of the seventh month, you shall have a holy [summoned] assembly; you shall do no laborious work. It will be for you a day of blowing the trumpets (the shophar, ram’s horn).

2You shall offer a burnt offering as a sweet and soothing aroma to the Lord: one bull, one ram, and seven male lambs one year old without blemish;