Numbers 6:9-11

‘If a man dies very suddenly beside him, and he defiles his dedicated head, then he shall shave his head on the day that he becomes [ceremonially] clean; he shall shave it on the seventh day [the end of the purification period]. On the eighth day he shall bring two turtledoves or two young pigeons to the priest, to the doorway of the Tent of Meeting (tabernacle). The priest shall offer the one as a sin offering and the other as a burnt offering and make atonement for him concerning his sin because of the [dead] body. He shall consecrate his head the same day