Numbers 19:19
The man who is clean is to sprinkle the unclean person on the third day and the seventh day. After he purifies the unclean person on the seventh day, the one being cleansed must wash his clothes and bathe in water, and he will be clean by evening.

Leviticus 11:25
and whoever picks up one of their carcasses must wash his clothes, and he will be unclean until evening.

Leviticus 14:9
On the seventh day he must shave off all his hair--his head, his beard, his eyebrows, and the rest of his hair. He must wash his clothes and bathe himself with water, and he will be clean.

Leviticus 15:13
When the man has been cleansed from his discharge, he must count off seven days for his cleansing, wash his clothes, and bathe himself in fresh water, and he shall be clean.