If I am praying and during the prayer I become certain that I did not wash my feet, how should I proceed in the prayer?

The questioner : The question says: If I am praying and during the prayer I become certain that I did not wash my feet, how should I proceed in the prayer? Do I say the closing salam or do I leave without saying it? And if I go to perform wudu, do I wash only my feet or do I repeat the entire wudu? And if I return to the prayer, do I pray the prayer from the beginning or do I continue from where I stopped? And likewise regarding passing wind, if its sound is heard or its smell is found during the prayer, what is the ruling regarding leaving, restarting, or completing the prayer?

The Shaykh : If one becomes aware that he did not wash his feet while he is praying, and it is possible for him to go to the washing place and renew his wudu, he should return and build upon what has passed of his prayer. If he is not able to do that, he must perform wudu with water and repeat the prayer.

The questioner : Does he leave the prayer without saying the salam or with the salam?

The Shaykh : Without saying the salam, because the prayer is still ongoing; he is still praying. It was reported in Sunan Abu Dawud from the hadith of Abu Bakr al-Thaqafi that the Prophet (peace and blessings be upon him) came out of his chamber one day for the Fajr prayer. When he said the takbir for the prayer, he gestured to them to stay in their places. Then he entered his house and returned with his head dripping with water, and he prayed with them; that is, he completed the prayer with them. From this, we said what we said.