Posted on 06/29/2012 by __socrates

RIBA. ربا
“Usury.” A term in Muslim law defined as “an excess according to a legal standard of measurement or weight, in one or two homogeneous articles opposed to each other in a contract of exchange, and in which such excess is stipulated as an obligatory condition on one of the parties without any return.”
The word riba appears to have the same meaning as the Hebrew neshec, which included gain, whether from the loan of money, or goods, or property of any kind. In the Mosaic law, conditions of gain for the loan of money or goods were rigorously prohibited. See Exod. xxii. 25; Lev, xxv. 36.. [USURY.]

Based on Hughes, Dictionary of Islam