What do they (Islamic banks) mean by that

Islamic finance and economics use numerous Arabic words. Among the oft-cited ones are:_x000D_ · Halal (permissible)_x000D_ · Haram (prohibited)_x000D_ · Ijara (a risk-sharing lease)_x000D_ · Khums (a required Shiite payment of 20% of one's income for the Muslim community and the Prophet's direct descendants)_x000D_ · Mudaraba (a finance arrangement in which the partners contribute funds to be managed by others)_x000D_ · Murabaha (a mark-up sale)_x000D_ · Qard hasan (a loan that bears no interest)_x000D_ · Riba (literally, increase or addition; in banking terminology, interest)_x000D_ · Sahib-al-maal (the financier)_x000D_ · Shari`a (the body of Islamic doctrine)_x000D_ · Shirka (a partnership in funds and management)_x000D_ · Ushr (a Sunni payment of 10% of agricultural income to poor people)_x000D_ · Zaka (the obligatory poor due of 2.5%)