Islamic banking and finance
Islamic banking, Islamic finance (Arabic: مصرفية إسلامية), or Sharia-compliant finance[1] is banking or financing activity that complies with Sharia (Islamic law) and its practical application through the development of Islamic economics. Some of the modes of Islamic banking/finance include Mudarabah (profit-sharing and loss-bearing), Wadiah (safekeeping), Musharaka (joint venture), Murabahah (cost-plus), and Ijara (leasing).
Sharia prohibits riba, or usury, defined as interest paid on all loans of money (although some Muslims dispute whether there is a consensus that interest is equivalent to riba).[2][3] Investment in businesses that provide goods or services considered contrary to Islamic principles (e.g. pork or alcohol) is also haram ("sinful and prohibited").

Islamic banking and finance - Wikipedia
An interesting topic for discussion.
