Mentioning impurity during the prayer

Question:
The Shaykh’s case: A man had impurity on him, and when the time for prayer came, he forgot about it and prayed. When he reached the final tashahhud, he remembered that he had impurity on him, but he completed the prayer. Then he went and washed it off and repeated his prayer. What is the ruling?

Answer:
If he had impurity on him and remembered it during the prayer, and he was able to get rid of it—for example, if it was on a garment he could take off and complete his prayer in another garment, or in a cloak, or in a head covering, or in a shirt, such that he could remove it and remain with what covers his 'awrah—then he should remove the garment with the impurity and complete his prayer, as the Prophet (peace and blessings be upon him) did when Jibril informed him that there was impurity on his hand while he was praying; he (peace and blessings be upon him) took it off and completed the prayer. However, if he is unable to remove that garment while in the prayer, he should exit the prayer and not continue in it, because it would be invalid. He should exit, remove the impurity, and start the prayer anew. As for his continuing until he finished the taslim, then going to perform wudu' and repeating the prayer, this is not correct. That is, he did something extra. The obligatory thing is that he should have exited, performed wudu', and prayed. This is not a repetition of the prayer; this is the prayer. As for the first one, it is not valid. Yes.