The ruling on the condition of paying the deposit before trying the goods

The questioner:
He says: Honorable Shaykh, may Allah grant you success, if the seller conditions on the buyer that he pay the deposit before trying the goods,

The Shaykh:
How do you try the goods?

The questioner:
On the condition that if the buyer rejects the goods, the deposit is not returned to him.

The Shaykh:
This is the point of the deposit: if the sale is not completed, the deposit belongs to the seller. As for trying the goods, I do not know what it is.

The questioner:
I say, Honorable Shaykh, the noble one.

The Shaykh:
Trying the goods.

The questioner:
Yes.

The Shaykh:
It is all the same. The deposit belongs to the seller whether he tried the goods or not; the important thing is that the sale was annulled. If the sale is annulled, and the buyer annulled the sale, then the deposit belongs to the seller.