Numbers 28:14-15

14You must also present a liquid offering with each sacrifice: two quarts of wine for each bull, a third of a gallon for the ram, and one quart for each lamb. Present this monthly burnt offering on the first day of each month throughout the year.

15“On the first day of each month, you must also offer one male goat for a sin offering to the Lord. This is in addition to the regular burnt offering and its accompanying liquid offering.