What is the ruling on relieving oneself while there is an ointment or oil on the sensitive area or hand? And is it obligatory to wash it with soap until the ointment is completely removed, or is water alone sufficient for its purification? And is it obligatory to use soap every time one performs istinja’ after relieving oneself due to oily secretions?

If impurity reaches a noble (creature/item), it becomes impure, and the impurity must be removed by any means, whether by scraping, rubbing, or using soap if water alone does not remove it. However, if you doubt that impurity has reached the paint, it does not become impure, because the original state is purity. Cleansing with water is sufficient to remove impurity, and it is not necessary to use soap; rather, a strong presumption that the area has returned to its original roughness is enough. One must stay away from obsessive doubts.