Is the fixed monthly profit paid by a real estate company in exchange for investing money in it, which the investor can retrieve at any time, halal or haram?

The conditions for Mudarabah are that the capital must not be guaranteed to the Mudarib, and the profit must not be a fixed and predetermined amount, but rather a circulating share of the profits. If the profits are fixed, the partnership is invalid, and all profit belongs to the capital owner, while the investor is entitled to a wage commensurate with their effort. Setting a time for the termination of the Mudarabah is permissible, as is withdrawing monthly amounts on account.