The ruling on praying in sandals in the mosque

The question: He also has a second question in his letter, in which he says: What is the ruling on one who enters the mosque and prays while wearing his shoes, and sometimes moves forward to the first row, knowing that mosques today, praise be to Allah, are carpeted with the finest carpets, and on top of this, it causes harm to the worshippers during prostration, such that the sole of his shoe is in the face of the person behind him?
The answer: This requires a detailed explanation: If the shoes are clean and sound, with nothing in them that harms the worshippers or the carpets, then there is no blame on him for that, and his prayer is valid. The Prophet (peace and blessings be upon him) prayed in his sandals. It is established from the Messenger of Allah (peace and blessings be upon him) that he prayed in his sandals, may Allah’s peace and blessings be upon him. And he said to the Companions when he took off his sandals one day because of something in them that caused harm, the people took off their sandals. When he finished his prayer, he asked them: They said: We saw you, O Messenger of Allah, take off your sandals, so we took off our sandals. He said (peace and blessings be upon him): This is how it was reported from him, may Allah’s peace and blessings be upon him. So he commanded praying in them and he himself also prayed in them. This is all on the condition that they are clean and sound, with no defect in them.
As for if they are dirty, then he does not pray in them. For this reason, the Prophet (peace and blessings be upon him) took off his sandals when there was dirt in them. If they have ritual impurity in them, or something that harms the carpets, such as types of mud or filth other than ritual impurity, or the like of what causes harm, then he does not pray in them and does not enter the mosque with them. Rather, he places them in a place at the mosque door or in another place so that he does not harm the mosque and its people, and so that he does not make their place of prayer dirty. Especially after the carpets were introduced, for when the carpets came, they became affected by everything. So it is better for the believer in this situation to keep his sandals in any place so that he walks in the mosque without sandals, so that he does not harm anyone, not with a mobile phone or anything else. Yes.
The presenter: Some people, O Shaykh, say: I preserve and revive the Sunnah by praying in my sandals despite the presence of carpets?
The Shaykh: Even if the Sunnah is to revive it by speech and explanation that this was the action of the Prophet (peace and blessings be upon him) and that there is no blame in it, but some people, or most people, do not care and do not guard against their sandals. Rather, they enter the mosque and do not care. If these people are permitted to enter the mosque, the filth and harm will accumulate in the carpets, and some people will be prevented from praying in the mosques because of this. So he harms the worshippers and causes them pain by what they find disgusting, and he only came for good, intended good, and performed the Sunnah. So the Sunnah in this situation is that he does not harm the worshippers and does not make their mosque dirty. This is what the believer should do. And there is no doubt that the carpets are affected by everything. There may be dust in them, there may be mud, there may be things attached to them like rags or wires or the like. In this situation, he should take them off outside at the door and pray with bare feet so that he does not harm the carpets and does not harm the worshippers with anything. This is the best, and it is the requirement of the legal principles. As for without a carpet, if he prays in his sandals, it is better if they are clean and sound with no defect in them. Yes.
The presenter: May Allah reward you with good.