The Ruling on Discount or Reduction Cards

Question:
A questioner says: When I buy some goods from certain stores, I have a special discount card. Is it permissible to use this card, or...

Answer:
The card requires a distinction. If it is a card that does not involve riba (usury or interest), where he is given a card, he gives money, and he is given a card to go buy with, and they transfer the amount to him without riba, there is no harm. If he puts a card down for one thousand riyals, or one hundred thousand riyals, and buys from people he knows, and transfers the amount to a group because they do not deal in riba, then there is no harm in anything of that. But if it involves riba, it is not permissible.