What is the ruling on Kuwait Finance House's investment deposits that yield varying annual profits (1% or 5%) and are claimed to be in accordance with Islamic Sharia and trade principles?

The basic ruling is that it is permissible to deal with Islamic banks, such as Kuwait Finance House, provided their transactions adhere to Islamic law. Deposits in Islamic banks are considered Mudarabah (profit-sharing partnership), not deposits, and must fulfill the conditions of a Shariah-compliant Mudarabah. It is not possible to rule on the permissibility or impermissibility of investment deposits without reviewing the contracts of the aforementioned bank. One can refer to the bank to inquire about its Shariah Supervisory Board, which oversees transactions in accordance with Islamic law.