How is the Zakat calculated for a plot of land sold in installments, knowing that each installment does not reach the minimum threshold (nisab)?

If the land is owned with the intention of trade, zakat is obligatory on it when a full year has passed on the money with which it was purchased. 2.5% of its value at the time the year completes should be given. If it is sold before the year is complete, zakat is obligatory on the sale price.

If the sale price is a deferred debt owed by a solvent and acknowledging buyer, its zakat becomes due every time a year passes. However, if the debtor is insolvent or procrastinating, zakat is not obligatory until the amount is received, and it is then subject to zakat for one year.

If the land was acquired without the intention of trade, and then the person decided to trade in it and sell it for a price that reaches the nisab, the year (for zakat) begins from the time of sale, and the rulings for zakat on debt apply to it as mentioned.