What is the ruling on purchasing a car in installments from a dealership and paying its price with post-dated checks, knowing that the Central Bank imposes a financial penalty for uncleared checks, and there is no late payment penalty from the seller?

Firstly: There is no harm in documenting the price of installment sales with checks, and it is permissible to require the customer to provide checks as a guarantee for the debt, provided that they are not used except on their due dates.

Secondly: If the state imposes a fine for a bounced check, there is no harm in the transaction, as long as the seller does not stipulate a fine that reverts to him. The buyer must fulfill the installments on their due dates to avoid the state's penalty.