Is zakat obligatory on a sum of 3,000 EGP in the bank, knowing that Al-Azhar has set this amount as the minimum threshold for zakat, while the nisab for gold (85 grams) currently equals 6,000 EGP, and a year has passed over the amount?

To determine the nisab for zakat on circulating currency today, one refers to its value in gold or silver, which makes the nisab variable. Zakat becomes obligatory for anyone who possesses the equivalent value of the gold nisab, whether it is 3000, 4000, or 6000. The questioner can ask market vendors about the price of raw gold or silver, or look it up in newspapers to compare it with the money she possesses. If the amount of 3000 is equal to the nisab and a full year (hawl) has passed on it, then zakat is obligatory; otherwise, it is not.