Leviticus 14:8, 10

He who is to be cleansed shall wash his clothes, shave off all his hair, and wash himself in water, that he may be clean. After that he shall come into the camp, and shall stay outside his tent seven days.

“And on the eighth day he shall take two male lambs without blemish, one ewe lamb of the first year without blemish, three-tenths of an ephah of fine flour mixed with oil as a grain offering, and one log of oil.