What is meant by "any remover," what is the evidence that if the substance of impurity is removed, what touches its place does not become impure, and what is meant by "the ruling of impurity"?

Scholars have differed on whether impurity can be removed by something other than pure water. The Malikis, Shafi'is, and Ahmadis (in the sound narration from him) hold that impurity cannot be removed except by pure water. Abu Hanifa and Ibn Taymiyyah, however, are of the view that it can be removed by water and by all liquids (excluding ghee and oil).

However, if the physical impurity itself is removed by an additive water or any other remover, other than food and impure substances, then anything that comes into contact with the impure spot will not become impure, even if it is wet. The Malikis adopted this view. So, if impurity affects a carpet and it is washed with altered water, the carpet does not become pure and prayer on it is not valid. However, if a person steps with their foot on that spot from which the physical impurity has been removed, their foot does not become impure.