How is the description of wudu' performed, and what if there are wounds on the limbs that are feared to be harmed by water?

Question:
May Allah reward you with good and do you well. He says: I was exposed to a wound, and the doctor indicated the necessity that water not reach this wound. When performing wudu', I kept the water away so that it would not reach it. Is my wudu' valid?

Answer:
Your wudu' is valid. However, if this wound has a covering on it, such as a bandage or a cast tightly bound over it, then it is obligatory to wipe over it if it is on the limbs of wudu'. You wipe over it, you wash the sound part of the limb, and you wipe over the wounded part, meaning over the covering of the wound. This suffices in place of washing what is underneath it. As for if this wound does not have a covering on it, then you do not bring water near it, as the doctor told you. But you perform tayammum when you have finished the wudu' and you want to pray. You perform tayammum for the location of the wound. Yes.