What are the essential matters that should be laid out as points before starting a small retail store project, in a partnership where the larger share of capital (80%) belongs to one partner, and the partner with full management (20%) has the smaller share, to ensure rights and avoid future problems, especially with the intention of dividing the profit equally despite the disparity in capital percentages?

There is no objection to establishing a company with varying capital contributions from the two partners, where one undertakes the management, and the profit is divided equally. This combines a partnership (sharika) and a Mudaraba (profit-sharing agreement), and the working partner is not liable for losses unless due to transgression or negligence. The loss is borne according to each partner's capital contribution, and it is obligatory that there be no betrayal or injustice between the partners.