Question
According to the Hanafi scholars, blood breaks wudu, and they also say that if a person kills a mosquito on their hand and its blood falls on them, it does not break wudu. How can we reconcile this?
Answer
I say, and with God's help: Blood invalidates (purity) if it is outside the body; because the external impurity invalidates, and blood is impure by consensus. This is different from if blood from outside touches the body, in which case it must be washed, but it does not invalidate; because the obligation is to remove the impurity, and God knows best.