Is it obligatory to pay the zakat on all saved gold before selling a portion of it if the remainder will fall below the nisab?

The nisab (minimum threshold) for gold is 85 grams of pure gold. There is no zakat (obligatory charity) due on wealth until a full hawl (lunar year) has passed over it, while it remains at the nisab. The hawl begins as soon as the wealth reaches the nisab, either on its own or when combined with cash or commercial goods. Gold purchased after the nisab is reached is subject to zakat along with the initial nisab, but it does not follow the initial nisab in terms of the time of its disbursement, because the new acquisition has its own separate hawl. However, it is permissible to combine it with the first hawl and pay zakat on all of it when the first hawl is due, as a form of expediting the zakat. Designating Ramadan as the zakat year is not permissible if it is not the time when the wealth reached the nisab, unless Ramadan comes before the hawl is complete, in which case it is permissible to pay zakat then as a form of expediting it. Gold can be sold at any time. If it is sold before the hawl is complete and the nisab is no longer maintained, then no zakat is due. However, if it is not sold until after the hawl is complete, then zakat is obligatory on the entire amount.