Offering Salah without being aware that he had a sexual dream

Q: What is the ruling on a man who performed Salah (prayer) while being unaware that he had a wet dream? Does he have to make up for the Salah? Besides, what is the ruling on those who prayed with him as Ma'mums (persons being led by an Imam in Prayer) while the concerned man was the Imam (the one who leads congregational Prayer)? Provide us with your beneficial answer please. May Allah reward you.

A: Taharah (ritual purification) is a condition for the validity of Salah. Such an Imam who prayed while not being in a state of Taharah should therefore make up for his Salah. However, the Ma'mums who prayed behind the concerned Imam without knowing that he was not in a state of Taharah do not have to make up for their Salah. (Part No. 5; Page No. 149) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.