The ruling on praying on top of covered orchards when the mosque is crowded

Question:
He says: Honorable Shaykh, may Allah grant you success. When some mosques become crowded, people pray outside, and some of them pray on top of large public orchards that are covered. Is their doing this permissible?

Answer:
Yes, there is nothing wrong with that. If the mosque is crowded, they may pray behind the mosque, on the condition that they see the imam or the person behind him, and that they hear the takbir. This is permissible out of necessity, even if there are orchards beneath them, as long as the surface they are praying on is pure, whether it is covered or not, as long as it is pure. There is nothing wrong with that, and they do not look at what is beneath them. Yes.

Question:
He says: Honorable Shaykh, may Allah grant you success.

Answer:
The jurists say that if one covers impure earth with clay, or spreads it out, the prayer is valid. Yes. Because what matters is what the person praying comes into direct contact with. If what the person praying comes into contact with is pure, his prayer is valid. Yes.