There must be mutual Exchange in selling Gold
Question :
A man sells and buys gold ingots by way of the banks without him receiving this gold or even seeing it with his eye. When we informed him that this is not permissible, he said that he does not have a safe place to keep it and he fears that it may be stolen. So, what is the ruling concerning this business of his?
Answer:
If he is not able to take the gold due to the lack of a safe place to keep it, it is not permissible for him to deal in this transaction, because it is obligatory to avoid the forbidden now while he is presently able to avoid it. This is because he is not required to practice this type of business. It is obligatory on him either to implement what the Shari'ah requires of taking the gold or he must leave this business practice.
Source:
Ash-Shaykh Ibn 'Uthaimin
Fatawa Islamiyah, Vol. 3 Page 363