TSK · Leviticus 8:33

[And] that son that is priest in his stead shall put them on seven days, when he cometh into the tabernacle of the congregation to minister in the holy [place].

And he that is to be cleansed shall wash his clothes, and shave off all his hair, and wash himself in water, that he may be clean: and after that he shall come into the camp, and shall tarry abroad out of his tent seven days.

Seven days shalt thou prepare every day a goat [for] a sin offering: they shall also prepare a young bullock, and a ram out of the flock, without blemish.