Is it permissible to transfer dollars to the account of someone else, then receive from him the equivalent in local currency, even though the transfer takes time to reach his account?

What is the ruling on accepting change in a different currency when buying something?

He imports goods and pays in dollars through an agent or partner, then when settling the account a few months later, does he have to check the price of the dollar at the time of payment or at the time of settling the account?

It is not permissible to sell gold for cash with a delay in payment

Loans with interest for students and recent graduates

Ruling on currency exchange when it is not possible to make the exchange hand-to-hand because of the war situation

Appointing someone else to exchange money and take it from himself

The correct way of dealing for those whose business is money transfer

Ruling on buying gold over the phone and receiving it one or two days later

Ruling on lending and borrowing gold and silver