Is it permissible for one of the partners in a project, who manages it, to use the other partner's capital without paying his share in advance, but rather paying it in installments, and is he entitled to take the share of management and capital during this period?

There is no objection to a partner taking a share exceeding his entitlement in return for additional work not required by the partnership agreement. However, it is not permissible for the company's capital, or part of it, to be a debt owed by the partner.

If the manager has not contributed any capital, he is only entitled to the portion related to his management, and this would be a Mudarabah (profit-sharing partnership) between labor and capital.

If the manager intends to purchase goods on credit to make them his capital, scholars have differed regarding the ruling on a partnership where one partner's capital consists of goods ( عروض) and the other's is cash. The majority of scholars consider it invalid, while Malik and Ahmad, in one narration, considered it valid, provided the goods are appraised and their value is considered the capital. This is the more preponderant opinion.

Therefore, if the manager and his partner agree to appraise these goods and determine their value at the time of the contract, there is no objection to it.