Lev Leviticus, chapter Book of Leviticus, chapter 15
And whosoever touches her bed shall wash his clothes, and bathe [himself] in water, and be unclean until the even.
And whosoever touches anything that she sat upon shall wash his clothes, and bathe [himself] in water, and be unclean until the even.
And if it [be] on [her] bed, or on anything whereon she sits, when he touches it, he shall be unclean until the even.