Qutaybah ibn Sa'id narrated to us: Layth narrated to us, from Ibn Abi Ja'far, from al-Julah Abu Kathir: Hanash al-San'ani narrated to me, from Fadalah ibn 'Ubayd, who said: We were with the Messenger of Allah, peace and blessings be upon him, on the day of Khaybar, selling gold ounces to the Jews in exchange for two or three dinars. The Messenger of Allah, peace and blessings be upon him, said: "Do not sell gold for gold except equal weight for equal weight."