Is Shawwal 7th, which marks one lunar year since the reopening of the shop, considered the date for the completion of the nisab and the calculation of zakat, or is Rajab 25th, the date of the original project's inception, considered the date for calculating zakat, and what should be done if Rajab 25th has already passed by more than two months?

For zakat to be obligatory on wealth, it is a condition that the wealth reaches the نصاب (minimum threshold) and that one Hijri year passes over it. If the wealth falls below the نصاب during the year, a new year begins. The zakat on trade goods is calculated by adding their value to the cash money, and if they are secondary to a zakatable asset, their year is the year of the primary asset. Zakat on a shop must be calculated from the date the wealth reached the نصاب, and if zakat was not paid in previous years when it was obligatory, then one must repent and hasten to pay it.