Leviticus 15:13-15

13‘Now when the man with the discharge becomes cleansed from his discharge, then he 1shall count off for himself seven days for his cleansing; he shall then wash his clothes and bathe his body in 2running water and will become clean. 14Then on the eighth day he shall take for himself 3two turtledoves or two young doves, and come before the Lord to the doorway of the tent of meeting and give them to the priest; 15and the priest shall offer them, 4one as a 5sin offering and the other as a burnt offering. So 6the priest shall make atonement on his behalf before the Lord because of his discharge.