Leviticus 15:20 KJV
And every thing that she lieth upon in her separation shall be unclean: every thing also that she sitteth upon shall be unclean.
Leviticus 15:20, King James Version
In context
19 And if a woman have an issue, and her issue in her flesh be blood, she shall be put apart seven days: and whosoever toucheth her shall be unclean until the even.
20 And every thing that she lieth upon in her separation shall be unclean: every thing also that she sitteth upon shall be unclean.
21 And whosoever toucheth her bed shall wash his clothes, and bathe himself in water, and be unclean until the even.