What is the ruling on purchasing gold with checks?

For purchasing gold with money, a prerequisite is immediate possession (al-taqabud) at the contracting session. The possession of a certified bank check is considered equivalent to the possession of money. Therefore, if the check is a bank check or certified, it is permissible to purchase gold with it. However, if it is not, then it is not permissible to use it in transactions where immediate possession is a condition.