Can I invest or save my saving money in a bank saving account which works on Mudarabah which says that the bank will take a fixed amount of money per month or yearly or lump sum at a time and invest my money according to islamic laws then the profit gain will be added to my saving account in such a way that they takes the 50% profit and add other 50% to my saving account. The profit is not fixed, the deposits return a variable profit after every month and the profit is declared at the end of the month maybe it is 11% this month and the next month it is 14% or 4%. I don’t know what it will be. Banks website also says this: Meezan Kafalah works on the underlying contracts of Mudarabah and Wakalah. In Mudarabah, funds deposited by the customer are allocated to a deposit pool, which are invested strictly in Islamic modes of finance. In Wakalah, the customer will agree to appoint Meezan Bank as his/her Wakeel (agent) for facilitation in the collection of Takaful cover contribution, whereby the Bank may, acting as a collection agent, collect Takaful cover contribution i.e Takaful expense amount from the customer and change WAKALAH fee inlieu of providing Takaful coverage, which on Bank’s sole discretion, WAKALAH FEE may be waived after 3 or more years of WAKALAH period. Is it permissible to use this saving account?