Why does impurity on the thigh not go away with stones?

Question : Yes, Khalid. I am inclined to think that the stronger position is that impurity is not removed by anything other than water. So what if it is on the thigh and stones do not remove it?

Answer : The difference is that the body does not get cleaned by stones. That is why we said that a trace remains that only water can remove in the chapter on cleaning with stones. Here, if you wipe it with a stone, a trace will remain that only water can remove. If possible, there is no harm, but if it is absolutely impossible, that is a known matter.