Does the ruling on the impurity of a garment cease merely by its drying and disappearance, or is it necessary to wash it with pure water, especially given the prophetic Hadith regarding menstrual blood and the statement of Sheikh Al-Fawzan concerning the necessity of washing?

The ruling of impurity is removed with its disappearance. However, if urine dries on a garment, its trace does not disappear. The majority of scholars hold that impurity on the ground is not purified by the sun and wind, unlike the Hanafis, who believe that the trace of impurity is removed by the effect of the sun and wind, not merely by dryness.

If a garment dries in the sun over a long period such that no trace of impurity appears, then it becomes pure by this according to some jurists, including the Shafi'is, Hanbalis, and Ibn Taymiyyah. However, dryness alone is not sufficient for the removal of impurity; rather, its trace must disappear.

Dry impurity on a garment does not transfer to someone who touches it with a dry hand. This does not mean the garment is pure, as impurity does not transfer between dry objects, but its non-transference does not mean its removal from the garment.

The Hanafis have held that the earth becomes pure by dryness through the sun, wind, and fire, and they have specified this to the earth and what is fixed therein, unlike other things such as garments.