What is the ruling on praying in slippers?
Machine translationRead the Arabic original
Question:
The questioner asks: Is praying in slippers part of the Sunnah?
Answer:
If it is easy to do so and it does not lead to harm, then there is nothing wrong with it. As for carpeted and cleaned mosques, if you enter wearing slippers from the street, you will dirty the carpets and the floor. In this case, you do not pray in the slippers because this causes harm to the mosque and the carpets. However, if the mosque is earthen, with no carpets and no tiles, but only dirt, then there is nothing wrong with it. Yes.
The questioner asks: Is praying in slippers part of the Sunnah?
Answer:
If it is easy to do so and it does not lead to harm, then there is nothing wrong with it. As for carpeted and cleaned mosques, if you enter wearing slippers from the street, you will dirty the carpets and the floor. In this case, you do not pray in the slippers because this causes harm to the mosque and the carpets. However, if the mosque is earthen, with no carpets and no tiles, but only dirt, then there is nothing wrong with it. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، ما حكم الصلاة في النَّعلين؟ للشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.