Profit and Loss Sharing refers to Sharia-compliant forms of equity financing such as mudarabah and musharakah. These mechanisms comply with the religious prohibition on interest on loans that most Muslims subscribe to. Mudarabah (مضاربة) refers to "trustee finance" or passive partnership contract, while Musharakah refers to equity participation contract. Other sources include sukuk and direct equity investment as types of PLS.

Islamic banking, Islamic finance, or Sharia-compliant finance is banking or financing activity that complies with Sharia and its practical application through the development of Islamic economics. Some of the modes of Islamic finance include mudarabah, wadiah (safekeeping), musharaka, murabahah (cost-plus), and ijarah (leasing).