Lokacin da muke magana game da ma'aunin azurfa (ko tushen azurfa), abin da ake nufi shi ne azurfa ce ke zama tushen rukunin kuɗi, tana da 'yancin a yi mata sikila, kuma tana zama kuɗin doka mara iyaka. Wannan ma'auni ya shahara sosai a da, kuma yana aiki a cikin Daular Musulunci tare da ma'aunin zinariya. Wasu ƙasashe sun yi amfani da shi a matsayin babban ma'aunin kuɗinsu kaɗai. Ma'aunin azurfa ya ci gaba da aiki a Indo-China har zuwa shekarar 1930, lokacin da aka maye gurbin piastar azurfa da ta zinariya.

When we talk about the silver standard (or the silver basis), what is meant is that silver forms the basis of the monetary unit, enjoys the freedom of coinage and is an unrestricted legal tender. This standard was well known in the past and was operating in the Islamic State alongside the gold standard. Some countries operated it as their main and only monetary standard. The silver standard continued to be operated in Indo-China until 1930 when the silver piaster was replaced with a golden one.

Ma'aunin azurfa yana kama da ma'aunin zinariya a dukkan cikakkun bayanansa. Saboda haka, aiwatar da ma'aunin zinariya tare da ma'aunin azurfa a cikin Jiha guda abu ne mai sauki. Daular Musulunci ta yi aiki da ma'aunin zinariya da azurfa tare tun lokacin da Manzon Allah ﷺ ya yi hijira zuwa Madina. Ya kamata wannan manufar kudi ta ci gaba da dogara da ma'aunin zinariya da azurfa duka, wato kudi ya kasance a cikin zinariya da azurfa, ko kuma a zahirin zinariya da azurfa a yawo, ko kuma a cikin takardun kudi da ake ba da tabbaci da ajiyar zinariya da azurfa, ina duk inda wadannan takardun kudi suke yawo.