The imam led the people in prayer and forgot to remove impurity from his garment; what is the ruling on their prayer?

Question:
The first question in this session came in a letter from the listener Ibn Ali al-Husayn from Morocco. In his first question, he asks: If a person prays the obligatory prayer with the people and then remembers after the prayer that there was impurity on his garment, or that he had carried impurity in his pocket but did not remember until after the prayer, is his prayer with the people valid or not? And if it is not valid, what must he do?

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, Lord of the worlds, and may Allah send prayers and blessings upon our Prophet Muhammad, his family, and his Companions. To proceed: If a person prays in a garment that has impurity on it and he did not know about it, or he knew about it but forgot it, his prayer is valid, whether he was the imam or a follower, and praise be to Allah. However, he must wash the impurity for the future, for the sake of praying in that garment in the future. Yes.