Question 855) - Can a gold Dinar or silver Dirham with alloy be exchanged for its same category in a different amount?

A: If the overwhelming metal of the Dinar is gold it will be treated as gold; and similarly with the Dirham. Thus the prohibition of differing amounts in proper gold/silver will apply. If most of the metal is alloy then they will not be regarded as gold/silver. They will be regarded as goods. If it is sold for its category in differing amounts then it is correct. (Immediate possession is still necessary because there is gold/silver in the goods which cannot be remove with ease.)

~ al-Quduri ~