How does one perform wudu' when one of his feet is injured and wrapped, while the other is sound?

Question:
He says: Honorable Shaykh, may Allah grant you success. A man’s foot was injured, so the doctor wrapped a bandage around part of it, and the rest of the foot is exposed. He cannot wear a sock over it, and his other foot is sound, and he has worn a sock on it. So now he wipes over the foot with the sock, washes the injured foot, and wipes over the bandage. Is his action valid?

Answer:
Yes, he washes the sound part and wipes over the injured part, and that is sufficient. As for the other foot, which has a sock on it, he wipes over the sound one that has a sock on it in the usual way, and he must adhere to the time limit for the sound foot: one day and one night for the resident, and three days for the traveler. As for the injured foot, it has no time limit; as long as he needs the bandage and the changing of the dressing to remain, it remains, even if the period is long. Yes.