Is it obligatory to dispose of haram money before starting a project, or can it be disposed of from the profits later, and can it be considered a partner in the business?

Unlawfully acquired money must be returned immediately to its owner. It is not permissible to invest it in a project and then return its profits, or to consider its owner a partner in a project, because this money was taken unjustly, and it is obligatory to return it to its rightful owner.