What is the ruling on praying in places that were grazing grounds and then left?

Question:
If they were grazing grounds and then left, meaning: the camels were moved from this location?

Answer:
If the place is changed from being a grazing ground and made a place for sitting, or it is removed, or the place is purified, or plastered, meaning: its traces are removed.
Q: But what if it is in the wilderness and he moves his camels from this location entirely?
A: As long as the traces of the grazing ground remain in it, the ruling remains. But if it changes by being removed or the wind blows over it, it is no longer a grazing ground.
Q: And if he prays in it, is he told to repeat the prayer?
A: Yes, he repeats the prayer, like: one who prays in a garbage dump.
Q: Even if he was forgetful?
A: Even if, even if.
Q: Grazing grounds for cows and sheep?
A: There is no harm with them. Grazing grounds for cows and sheep, there is no harm with them.