Numbers 15:24-25

24If the mistake was made unintentionally, and the community was unaware of it, the whole community must present a young bull for a burnt offering as a pleasing aroma to the Lord. It must be offered along with its prescribed grain offering and liquid offering and with one male goat for a sin offering.

25With it the priest will purify the whole community of Israel, making them right with the Lord, and they will be forgiven. For it was an unintentional sin, and they have corrected it with their offerings to the Lord—the special gift and the sin offering.