Leviticus 15:23 in the King James Version
And if it be on her bed, or on any thing whereon she sitteth, when he toucheth it, he shall be unclean until the even.
Context
22 Whoever touches anything that she sits on shall wash his clothes, and bathe himself in water, and be unclean until the evening.
23 If it is on the bed, or on anything she sits on, when he touches it, he shall be unclean until the evening.
24 “‘If any man lies with her, and her monthly flow is on him, he shall be unclean seven days; and every bed he lies on shall be unclean.