797. The ‘Illah (Effective Cause) of the Prohibition of Exchange of Unequal Measures of Those Items
Some scholars indicated that the prohibition applies only to those six types mentioned in the hadith. The Dhâhiris are amongst those, because they do not employ qiyâs.
Most scholars maintained that any other item that shares the same ‘illah of the prohibition should be prohibited as well. They agreed that the ‘illah is different between gold and silver and the other four types (wheat, barley, dates, and salt); however, they disagreed over the ‘illah in all:
There are three variant reports from Aḥmad regarding the ‘illah of the prohibition:
1) The most popular: Regarding gold and silver: being of the same kind and measurable by weight. Regarding the four other types: being of the same kind and measurable by volume or weight. (+H)
2) The second report: Regarding gold and silver: being prices for other commodities. (+M, +S) Regarding the four other types: being foods of the same kind. (+S(
3) The third report: Regarding the four other types: being foods of the same kind measurable by volume or weight. (This is the position chosen in this book by Ibn Qudâmah).
Regarding gold and silver, the second report, though not the most popular amongst the earlier Ḥanbalis, is the choice of the majority of the contemporary Ḥanbalis as well as the vast majority of contemporary scholars in general.
¿ All kinds of currency take the ruling of gold and silver and thus are potentially usurious properties. The counter positions seem to miss, in favor of legal technicalities, the objectives of the Legislator in prohibiting usury.
The Wisdom behind the Prohibition of Ribâ
I. The wisdom behind the prohibition of ribâ al-fadl, including ribâ al-yadd:
1) Blocking the means to ribâ an-nasee’ah (deferment). If people get used to exchanging the same kind with a difference in immediate transactions, they may subsequently do the same in deferred transactions.
2) Limiting bartering as a method of transactions. This increases the standardization of values through the use of currency, which benefits the market and the economy. Instead of trading two measures of a cheaper brand of dates for one measure of a better brand, the Prophet (SA) instructed his Companions to sell the cheaper dates for money and use that money to buy the better dates.