Numbers 28:16

And their drink offerings shall be half an hin of wine unto a bullock, and the third part of an hin unto a ram, and a fourth part of an hin unto a lamb: this is the burnt offering of every month throughout the months of the year.

And one kid of the goats for a sin offering unto the LORD shall be offered, beside the continual burnt offering, and his drink offering.

And in the fifteenth day of this month is the feast: seven days shall unleavened bread be eaten.

In the first day shall be an holy convocation; ye shall do no manner of servile work therein: