Numbers 15:24-25

24then it will be, if it is unintentionally committed, without the knowledge of the congregation, that the whole congregation shall offer one young bull as a burnt offering, as a sweet aroma to the Lord, with its grain offering and its drink offering, according to the ordinance, and one kid of the goats as a sin offering.

25So the priest shall make atonement for the whole congregation of the children of Israel, and it shall be forgiven them, for it was unintentional; they shall bring their offering, an offering made by fire to the Lord, and their sin offering before the Lord, for their unintended sin.