• Normal business loss is different from loss caused by fault.
• If the managing partner (مضارب) is negligent, dishonest or commits misconduct, he is liable for the loss caused by that fault.
• Business risk belongs to the investment; misconduct liability belongs to the person who caused it.
Keeping the legal roles clear prevents the arrangement from being treated like a fixed-return loan. Capital, management, ownership and profit entitlement should each follow the role actually undertaken.
Do not confuse genuine business loss with loss caused by negligence or dishonesty.