How does the imam replace one of the ma'mums if his wudu' becomes invalid during prostration?

Question:
A mumble. If the imam's wudu' becomes invalid while he is praying in the state of prostration, how does one of the ma'mums take over?

Answer:
He rises from prostration and one of the ma'mums takes his place to complete the prayer, or he tells the ma'mums to wait and goes to perform wudu', then returns and starts the prayer with them anew. Yes, either he appoints a substitute to complete the prayer with them, or he orders them to stay and he goes to perform wudu' and returns to start the prayer with them anew. This is better; this is better.