Is water rendered impure if a mouse falls into it?

Question : A mouse fell into water and then came out alive; there is no harm in that. However, they stipulated regarding an animal that falls into water and then comes out alive: if it is pure, the matter is clear in their view; if it is impure...

Answer : ...then, according to the words of the jurists (may Allah have mercy on them), the water becomes impure merely by contact, unless it is two qullahs or more, in which case it does not become impure unless its characteristics are changed. The reason Imam Ahmad (may Allah have mercy on him) said there is no harm is that the mouse is one of the animals that crawl on the ground, so it is pure.