" 'On the Sabbath day, bring an offering of two lambs. They must be a year old. They must not have any flaws. Offer them along with their drink offering. Offer them along with a grain offering of 16 cups of fine flour. Mix it with olive oil.
References for Numbers 28:9
It is the burnt offering for every Sabbath day. It is in addition to the regular burnt offering and its drink offering.