If a carcass, a corpse, falls into a spring of water, it still remains pure.
By the way, water in which there is a corpse was considered healing water. There used to be a purification well in the cemetery where the holy ARI is buried, a water hole where they used to wash the corpses before burial. People used to come there especially to dip in that water to get well. Therefore, they closed that hole.
There was a popular belief that it is very helpful to wash with the same soap that the dead were washed with. This means that these are the means that correct even the dead, that is, even a dead desire.
From KabTV’s “Secrets of the Eternal Book” 1/22/14