Is menstrual blood ritually impure?

Question : It is not possible to equate this with that. If you ask, “Should it not be analogized to menstrual blood, since menstrual blood is ritually impure?” The evidence is that the Messenger (peace and blessings be upon him) ordered a woman to scrape it, then rub it, then sprinkle it with water or wash it, and then pray in it.

Answer : The answer is that the Messenger (peace and blessings be upon him) distinguished between this blood and menstrual blood. He said that menstrual blood is a natural disposition for women. This was when he entered upon Aisha (may Allah be pleased with her) while she was menstruating and found her crying while in the state of ihram during the Farewell Pilgrimage. He said, “What is wrong with you? Have you started your period?” She said, “Yes.” He said, “This is something Allah has decreed for the daughters of Adam.” Thus, he indicated that this is a natural disposition, a decree written by divine decree and creation. And regarding irregular bleeding, he said, “This is blood from a vein.”
So he distinguished between menstrual blood and the blood of irregular bleeding by stating that the blood of irregular bleeding is blood from a vein, and its ruling is not the ruling of menstruation. Furthermore, menstrual blood is thick and foul-smelling, with a disagreeable odor, resembling urine and feces. Therefore, it is not valid to analogize blood that comes from other than the two passages to blood that comes from the two passages, which is menstrual blood, as well as post-natal bleeding and irregular bleeding.