I hope that you will beable to
advise us about using Saudi Net cards [debit cards] when buying things
that we need from the stores. These cards are used in the following
manner: when the amount of the purchase has been added up, for example 150
riyaals, the card is given to the vendor and he passes (“swipes”) it
through a machine that he has in his store. The value of the purchase is
then taken instantly, by transferring the amount from the purchaser’s
account to the vendor’s account in the same instant, i.e., before the
buyer leaves the shop.
Praise be to Allah.
If the matter is as you describe, there is no reason why these cards
should not be used, if the purchaser has sufficient funds in his account
to cover the required amount.
And Allaah is the source of strength. May Allaah bless our
Prophet Muhammad and his family and companions, and grant them peace.