In different fatwas, Egypt’s Dar al-Iftaa answers questions from viewers. We at See put these fatwas out there. It says in the question:
Does blood from the nose or a cut make washing impossible?
Answer
Even if blood comes out of your nose or a cut, that doesn’t mean you can’t wash. Scholars differ about this, so it is best to do cleansing again.
And God knows the most.