Numbers 5:30

5:30 or when jealous feelings come over a man and he becomes suspicious of his wife; then he must have the woman stand before the Lord, and the priest will carry out all this law upon her.

Numbers 19:2

19:2 “This is the ordinance of the law which the Lord has commanded: ‘Instruct the Israelites to bring you a red heifer without blemish, which has no defect and has never carried a yoke.