Is trading in paper currency permissible?

The Shaykh : Therefore, we say that exchanging paper currency for paper currency for the purpose of trade is not permissible in the Shari'ah. Rather, a person should exchange only within the limits of pressing need and dire necessity that he must have. As for looking at the market to see which paper currency has become cheap, then going to the market to buy it by the thousands, or even by the millions, in order to wait for a day when these paper currencies rise in value so he can sell them, and so on—this greed and this avarice have led many of the great wealthy people to bankruptcy. This was the subject of the previous question. In summary, in summary, regarding paper currency today, one must be cautious that the Muslim does not engage in it in a way that violates the Shari'ah. Yes.

The questioner : Considering similarity here in these six categories is by volume, not by weight, for example.

The Shaykh : Those measured by weight, the weight of those measured by weight, like gold and silver, and perhaps all of it.

The questioner : Now, and dates, for example.

The Shaykh : Dates are measured by volume.