Placing money in an investment company with an unspecified profit

Question:
He also asks and says: I have some money that I placed in an investment company to make this money profitable. The profit is roughly the same, and there is no agreement on a profit rate. Is this riba (usury or interest) or not? He says: I have some money that I placed in an investment company to make this money profitable. The profit is roughly the same each month, but there is no agreement on a profit rate.

Answer:
If the company deals with the money by taking half the profit, a third, or a quarter, there is no harm. However, if it gives a specific amount, such as three, four, five, one percent, or five percent, this is not permissible. But if it is a shared portion, where you give them money to dispose of in buying and selling or other businesses, and you have half the profit, a quarter, or a portion, there is no harm. It may be called a mudarabah (profit-sharing partnership) or a permissible business. However, if they take your money and give you a known amount, such as five percent or one percent, this is riba and is not permissible.