اَللَّاوِيِّينَ 15:20

وَكُلُّ مَا تَضْطَجِعُ عَلَيْهِ فِي طَمْثِهَا يَكُونُ نَجِسًا، وَكُلُّ مَا تَجْلِسُ عَلَيْهِ يَكُونُ نَجِسًا.

And every thing that she lieth upon in her separation shall be unclean: every thing also that she sitteth upon shall be unclean.