What is the ruling on investing in a foreign website for buying and selling real estate and investment properties, which guarantees a fixed daily profit margin of 1.6%, increasing on Sundays and Thursdays?

Firstly: It is permissible for a Muslim to partner with a non-Muslim in trade, as long as it does not involve anything unlawful.

Secondly: This transaction is called Mudarabah (definition), which is: "handing over money to someone who will trade with it for a known, undivided share of the profit." This is permissible by the consensus of scholars. For Mudarabah to be valid, the share of each contracting party in the profit must be known and an undivided portion, such as half or a third, not a fixed amount from the capital. If the mentioned percentage (1.6%) is from the total daily profit of the company, then the Mudarabah is permissible. However, if it is from the capital value, then it is not permissible, as the profit would become a fixed amount, which is contrary to justice in Mudarabah. If, in addition to this, the capital is guaranteed, it becomes a prohibited usurious loan.

Thirdly: For the Mudarabah contract to be valid, certain conditions must be met. It is necessary to ascertain the company's activities and verify the validity of its claim of trading in real estate.