Qiyas: The process of analogical reasoning as applied to the deduction of juridical principles from the Qur'an and the Sunnah.
Quran: The sacred book of Islam.
Rahn: Pledge. Collateral.
Ramadan: Month of fasting for Muslims.
Retakaful: Reinsurance based on Islamic principles.
Riba: usury, interest.
Ribh: Root of murabaha Cost plus Profit, and it means profit.
Sadaqah: Donation, charitable giving. An act of charity.
Sahih: Valid, said of a contract. Opp. Batil.