Exchange as a condition of selling gold

Q 2: If a person sells an amount of gold to another, and the buyer does not have some or all of the value, not even after a few days or one or two months, is this permissible or not?

A: If the price for which someone buys the gold is in the form of gold or silver or money of equivalent value, this is not permissible, rather it is Haram (prohibited) because it involves Riba Al-Nasi'ah (usury of delay, conditional excess for delay of payment). If the purchase is made with other goods such as cloth or food etc, then it is permissible to delay the payment.May Allah grant us success. May peace and blessings of Allah be upon our Prophet Muhammad, his family and Companions!