Is the financial transaction of endowment insurance - which includes monthly premiums invested in legitimate commercial activities, and the premiums and profits are recovered after a specified period, with a life insurance component paid in the event of death before the end of the period - permissible or not?

The company takes the installments and invests them in the project, but the contract includes a condition that the company guarantees the capital and the installments paid to it. This is impermissible, as the transaction is a prohibited Mudarabah (definition) (partnership) due to the guarantee of capital. The life insurance policy further corrupts and prohibits it, because the company acts as the Mudarib (investing partner), and if it guarantees a specific amount upon the death of the owner of the capital, the condition is forbidden, and the transaction devolves into a loan with interest, which is usury (riba).