Numbers 15:24-25

24then it shall be, if it was done unintentionally without the knowledge of the congregation, that all the congregation shall offer one young bull as a burnt offering, as a sweet and soothing aroma to the Lord, with its grain offering and its drink offering, according to the ordinance, and one male goat as a sin offering.

25Then the priest shall make atonement for all the congregation of the sons of Israel, and they will be forgiven, for it was an error and they have brought their offering, an offering by fire to the Lord, and their sin offering before the Lord, for their error.