Are feet 'awrah?

Do the feet fall under awrah in prayer?

There are some who believe that the feet do not need to be covered in prayer. They take that from the Hanafi madhab. The majority of scholars and schools of jurispudence agree that the feet must be covered.

The feet of a Muslim woman should be covered in prayer. This is the view of Imam Malik, Imam Shafi'i and Imam Ahmad. They are covered with a long dress, shoes or thick socks (so as not to expose the shape).

So the feet should be covered in prayer according to the majority of Madhabs. The Muslim woman who exposes this during prayer will, according to the correct opinion, have to repeat her prayer. This is not the case when it happened by accident. In that case, it should be covered as soon as possible.

Around non-mahram men

Does the Muslim woman cover her feet in front of non-mahram men? The majority of the madhabs believe so, and that is the correct opinion.

The opinion of Imam Malik, Imam Shafi'i and Imam Ahmad is that everything the woman is 'awrah in front of non-mahram men. This also means that the feet must be covered.

The Hadith used to indicate that the feet fall under awrah is the Hadith in Sunan Tirmidhi. Umm Salamah (wife of the Prophet (ﷺ)) asked about covering the feet when she is outside.

The Prophet (ﷺ) said:
"Whoever has his garment dragged out of pride, Allah will not look at him on the Day of Resurrection."
Umm Salamah asked: “What should women do with their hems? He said: “They should lower it a hand span.” She said: But then the feet will be seen. The Prophet (ﷺ) said: “Then lower it a cubit (44 centimeters), but no more than that."
[Sunan al-Tirmidhi 1731 (Hasan Sahih)]

And then comes the question: "What if my abaya gets dirty from the ground outside?". That is exactly what the Prophet was asked about.

Umm Salamah (the wife of the Prophet (peace be upon him)) reported:
I said to the Prophet (ﷺ): "I am a woman whose clothes drag on the ground, and I may walk through a dirty place." The Messenger of Allah (ﷺ) thereupon said: "That which comes after purifies it."
[Sunan al-Tirmidhi 143 (Hasan)]

So the Abaya is purified by what comes after. One does not have to worry about the Abaya getting dirty when it is dragged over the ground. If obvious impurity appears on it, it should be removed.

Around mahram men

The Muslim woman does not have to cover her feet when she is with men who are her mahram. She is allowed this because of the verse from Surah Nur.

And tell the believing women to lower their gaze and guard their chastity, and not to show their beauty but what should be visible of it. And they must wear the veils completely over their bosoms and not display their beauty openly except to their husbands, their fathers, their fathers-in-law, their sons, their husband's sons, their brothers, their brothers' sons, or the sons from their sisters...
[Surah Nur verse 31]

With women

For Muslim women it is allowed to uncover their feet in front of certain women. For example, she may expose this to Muslim women, but not to disbelieving women.

And tell the believing women to lower their gaze and guard their chastity and not show their beauty except what should be visible of it. And they must wear the veils completely over their bosoms and not openly display their beauty, except to: ... their women ...
[Surah Nur, verse 31]