The most correct view is that blood that comes out from anywhere other than the front and back passage does not break the Wudu. If the blood or pus that gets on your garment is a small amount, there is nothing wrong with praying in that garment.

1. If the impurity changes one of the characteristics of the water (colour, taste or smell), this water becomes impure according to scholarly consensus, regardless of whether the water was of a great or small amount. 2. If something impure falls into a large amount of water, but it does not change any of its characteristics, be it taste, colour or smell, this water is pure, according to scholarly consensus.