The jurists agree that if pus is expelled by the human body, it is impure, because it comes under the heading of unclean things (Al-khaba’ith: unclean, impure, evil things).

Flowing blood is impure according to scholarly consensus. That is indicated by clear evidence from the Quran and Sunnah.

We may conclude regarding these bones that if they have been burned completely and turned into charcoal or ashes, these ashes are pure (taahir) and they do not affect the permissibility of the sugar which is mixed with them during the refining process.

If the woman who gets some impurity on the hem of her garment then walks over ground or asphalt or a street or a pavement that removes the essence of that impurity, so that no trace of it is left, then her garment is purified by that, and she does not have to use water in order to remove that impurity.