Leviticus 15:19

When a woman has a discharge , and the discharge in her body is blood , she shall be in her menstrual impurity for seven days , and whoever touches her shall be unclean until the evening .

“‘When a woman has her regular flow of blood, the impurity of her monthly period will last seven days, and anyone who touches her will be unclean till evening.

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.