What is the ruling on depositing a sum of money designated for marriage into a "Youm Bi Youm" account at Banque Misr, out of fear of losing it, given one's lack of knowledge about trade and its risks?

Consuming usury is one of the greatest sins and a destroyer of wealth. Sincere repentance from it is obligatory, as is withdrawing money from usurious bank accounts and disposing of its interest by giving it to the poor and needy. The principal should be deposited in a secure Islamic financial institution. The zakat (definition) on these funds must also be paid, as zakat purifies and increases them. The Bank Misr Money Market Fund with periodic returns has stated that the fund invests its money in bonds, treasury bills, and bank deposits, all of which are usurious instruments.