Is it permissible to work for a company that produces a halal product, knowing that its capital is mixed between industrial companies (82.5%) and usurious banks (17.5%), in addition to its borrowing of $165 million from other usurious banks to complete construction and investment costs?

Usury is a grave sin, and Allah has declared war on those who engage in it. Therefore, it is not permissible for a Muslim to work in an institution that deals with usury, as this constitutes cooperation in sin. However, if the institution does not engage in forbidden activities but has taken out an interest-bearing loan, and usurious banks contribute to its capital, it is preferable to avoid working with it if an alternative is available. Nevertheless, working for it is not forbidden because it is like one who possesses illicit wealth mixed with lawful wealth.