Is buying and selling sheep, with the payment of 10 riyals for each head purchased in exchange for financing the transaction, Islamically permissible?

It is not permissible to enter into the aforementioned transaction because it is usury (riba), which involves lending a sum of money with an increment. However, it is permissible to sell the sheep to him after purchasing and possessing them, agreeing on a specific price. Profit from selling is permissible, unlike profit from a loan. Alternatively, the money can be given to him as a legitimate Mudarabah (profit-sharing partnership) with a common share of the profit, not a fixed amount, provided that the working partner does not guarantee the principal.