Selling by counterpoising gold for gold or dirhams for dirhams.
Al-tajir al-safar
Al-ribh al-mu‘tad
Al-qafiz al-hajjaji
Al-hajjaji
Al-’athari
Al-khalit
Al-bai‘ al-mabrur
Al-dain
Al-dinar al-dhahaby
Al-iktinaz