Do not sit where a
Menstruating woman has sat
Seven days unclean!
When a woman has a discharge of blood that is her regular discharge from her body, she shall be in her impurity for seven days, and whoever touches her shall be unclean until the evening. Everything upon which she lies during her impurity shall be unclean; everything also upon which she sits shall be unclean. Whoever touches her bed shall wash his clothes, and bathe in water, and be unclean until the evening.Leviticus 15:19-21 NRSV
Tampons weren’t invented yet so you gotta have rules for women on their periods. I kinda like the haiku version of this Levitical Law.