“I once asked abu Ja‘far (a.s.), about the case of a man who gives one thousand dirham to a man to mix with his assets and use in trade. When he asks for payment, he says that the asset has gone along with an equal amount of assets that belongs to someone else with a great deal of funds of other people. He then asks, ‘What have the others done?’ He replies, ‘They took their assets? Abu Ja‘far, and abu ‘Abd Allah, ‘Alayhim al-Salam, both have said, ‘He can ask him (the trader) for his assets, who can then ask them for whatever (extra) they have taken?”