According to the terms of a particular Mudaraba Contract, the Mudarabah fund should be invested in securities with investible grades. These securities should be from the list agreed by the capital provider and Mudarib. However, in anticipation of huge profits, the mudarib invested in non-approved securities with lower ratings. If a loss arises from such investment, who will bear the loss and why? Please elaborate on the rights and responsibilities of each party in this instance.