Is the blood of Istihaadhah (vaginal bleeding outside the menstrual period) pure or impure? What is the evidence?

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The majority of scholars from the four schools of Islamic Jurisprudence and others unanimously agree that spilled blood is impure. This includes blood of Istihaadhah (the vaginal bleeding outside the menstrual period). That is because it spills out and comes from one of the excretory organs. Al-Kaasaani a Hanafi scholar, stated the types of impurities and mentioned the blood of Istihaadhah as one of them. He said: “Likewise, the blood of menstruation, post-partum bleeding and vaginal bleeding outside the menstrual period, for all are impure.”

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