允许将国家货币与他国货币相互兑换，就像兑换国家自己的不同铸币一样。两种货币之间的兑换比率可以不同，只要这两种货币彼此不同即可。但是，此类交易必须以即时交割的方式进行，属于直接交易，不得有任何延迟。只要是在两种不同货币之间，兑换比率可以不受限制地波动。所有公民均可在国内或国外购买所需的货币，且无需事先取得许可或类似批准。

It is permissible to have exchange between the State currency and the currency of other states like the exchange between the State’s own coinages. It is permissible for the exchange rate between two currencies to differ provided the currencies are different from each other. However, such transactions must be undertaken in a hand-to-hand manner and constitute a direct transaction with no delay involved. The exchange rate can fluctuate without any restriction as long as it is between two different currencies. All citizens can buy whatever currency they require from within or outside the State, and they can purchase the required currency without obtaining prior permission or the like.

其证据是先知的话语:

Its evidence are the words of the Prophet :

.» وَبِيعُوا الذَّهَبَ بِالْفِضَّةِ وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْتُمْ «.

.» وَبِيعُوا الذَّهَبَ بِالْفِضَّةِ وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْتُمْ «.

“金与银可以随你意愿互换，银与金也可以随你意愿互换”（布哈里圣训集载，传自艾布·巴克拉）。又据马立克·本·奥斯·哈达萨尼传述，他说：“我来了，说：谁愿意为我的金子兑换迪拉姆？塔勒哈·本·欧拜杜拉（当时他正与欧麦尔·本·哈塔卜同坐）说：让我们看看你的金子，然后你过一会儿再来。等我们的仆人来了，我们就把你的银子给你。于是欧麦尔·本·哈塔卜（愿主喜悦他）说：绝对不行。奉安拉（SWT）之名起誓，要么把银子给他，要么把他的金子还给他，因为安拉的使者ﷺ说过：”