A:
If
the money that your partner paid came from the salary he earns in return for the unlawful services he does for the bank, as working in Riba-based transactions, it is not permissible for you to form a partnership with him, whether in the past or in the future. As for the profits, you can have the profit that is proportionate to the capital that you invested. (Part No. 14; Page No. 307) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.