Al-’amwal al-ribawiyah
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Definition of "Al-’amwal al-ribawiyah"
It connotes six items on which riba al-fadl arises: gold, silver, dates, wheat, salt and barley. Their exchange has been conditional with equality in weight and measure and simultaneous transfer of possession, failing which it would involve riba al-fadl. It has been held by some jurists that riba al-fadl arises only in respect of these six articles, but others have included other articles similar to these six.