How is the sum of 13,000 Algerian Dinars, invested by the questioner's paternal aunt in sheep with a person who died in 1977 without informing his children, to be repaid? And should the amount be repaid at its original value, or re-evaluated by gold or sheep, given the decrease in the value of the Algerian Dinar? And should the profits, if any, also be repaid?

If the transaction was a loan, then the aunt is entitled to only the amount she lent (13,000 DZD), regardless of the change in currency value, as debts are repaid with their equivalent. However, if the transaction was a Mudarabah (profit-sharing partnership), then she is entitled to her capital and her share of the profit, if any. If there was a loss, it is deducted from the capital, and the Mudarib (investing partner) does not guarantee it. The heirs are obligated to return only the remaining capital.