Are brothers legally obliged to pay on behalf of their brother who swindled 36 people through fictitious partnerships and alleged gains? And does the proposed solution of deducting the fictitious profits and then deducting half of the remaining amount from the victims' capital touch upon Islamic law? And is what the brothers paid considered a favor from them?

This person guarantees the money of the people from whom he took it, except for the first person, because he was a mudarib (partner in profit-sharing) with him, and a mudarib does not guarantee the money unless there is transgression. As for the others, he was a deceitful liar, so he must return their money, and it is a debt upon him until he returns it to its owners or they forgive him. His brothers are not obliged to bear these funds. He must make sincere repentance for this sin, which combined lying, betrayal, and consuming others' wealth.