Wiktionary
n. A cooperative system of reimbursement in case of loss; a sort of Islamic form of insurance.
Wikipedia
Takaful (, sometimes translated as "solidarity" or mutual guarantee) is a co-operative system of reimbursement or repayment in case of loss, organized as an Islamic or sharia compliant alternative to conventional insurance, which Takaful proponents believe contains forbidden riba (usury) and gharar (excessive uncertainty).
Under takaful people and companies concerned about hazards make regular contributions ("donations") to be reimbursed or repaid to members in the event of loss, and managed on their behalf by a takaful operator. Takaful is grounded in Islamic muamalat ( Islamic banking), observing the rules and regulations of Islamic law.
By the end of 2011, the takaful industry had grown to $12 billion "contributions" and is forecast to reach $20 billion by 2017. The movement has been praised as providing "superior alternatives" to insurance that "reinvigorate human capital, emphasize personal dignity, community self-help, and economic self-development"; but also criticized as having "dwindled" in scope to an industry of "conventional insurance with Arabic terminology and language of contract."