What is the ruling on a Muslim partnering with a non-Muslim in a business to which usurious funds have been added, given that the Muslim cannot withdraw without significant loss?

It is disliked to partner with someone who does not avoid forbidden things, such as disbelievers and the wicked, for fear that unlawful earnings might affect the partner. If the Muslim partner can prevent the infiltration of usury, then the partnership is permissible; otherwise, it is not permissible from the outset. If usurious transactions have occurred, the profit related to them must be given in charity to purify the wealth. If there is doubt, giving charity is recommended. Whatever the Muslim partner knows to be from usurious gains and forbidden things, it is not permissible for him to benefit from it. As for what he is unaware of, there is no blame upon him regarding it. He must prevent his partner from future unlawful disposal of company funds, otherwise, the partnership must be dissolved.