What is the ruling regarding minor impurity on polished surfaces like swords or mirrors?
Chapter on Praying with Impurity and Other Matters
Al-Mughni
Book of Prayer
Primary text
If a minor impurity, such as blood, is present on polished bodies like swords or mirrors, it is pardoned. Even a large amount of it is pardoned by wiping, because what remains after wiping is minor. If the location of the impurity itself is large, it is pardoned, similar to minor impurities on other objects.
Supporting text
The general principle is that if impurity is hidden on the body or clothing, prayer is not permissible until its removal is certain. Certainty of removal requires washing every area that the impurity might have contacted. If the location is unknown on a garment, the entire garment must be washed. If the side is known, that side must be washed completely. If seen on the body or worn clothing, everything visible to the eye must be washed. This is the view of al-Nakha'i, al-Shafi'i, Malik, and Ibn al-Mundhir.