Following the Prophet’s guidance, the impurity of a dog is to be removed by washing the vessel seven times, one of which should be with soil.

One cannot pray in impure clothes because of the general meaning of the texts which indicate that clothes should be pure when praying. They do not differentiate between dry impurity and wet impurity. Impurity cannot be removed from a garment except by washing it with purifying water. It is not sufficient merely to let the impurity dry out.

If these discharges come as the result of intimacy, then they are pure, because they are not the waste products of eating and drinking, thus they are not urine. Based on this, she does not have to wash her underwear or change them if these discharges get on them.

Madhiy is impure, so if it is emitted and any of it gets onto the testicles or any part of the body, it is obligatory to wash the place it got onto in order to remove this impurity. If someone prays knowing that there is any Madhiy on his body and he deliberately did not wash it, then his prayer is not valid.