There is no problem in shaking hands with non-Muslims of the same sex even if your hands or their hands are wet. If one rents a house from the ahl al-kitāb in their countries, there is no need for purification of the house. Utensils that have become impure with wine must be washed three times by Qalīl water and their interiors must be rubbed with hands. If an impure object is washed by Kurr or tap water and the Najis substance comes off during washing, it becomes pure. The blood spot in an egg must be removed and discarded, but the other parts are pure and allowed to eat. But if the blood spot is intentionally blended with the other parts of the egg, it is not permissible to eat it.