If the remainder after expenses reaches the nisab, then zakah is due on it

Q: If a man has a sum of money and a lunar year has passed over it, and he spends from his income on his household, is zakah obligatory on the aforementioned sum?

A: Zakah is obligatory on it if a lunar year has passed over it and it has reached the nisab. The amount is fifty-six riyals of silver or its equivalent in paper currency. Even if the aforementioned sum was set aside for expenses, but what remains after the expenses reaches the nisab or more, and a lunar year has passed over it, then zakah is obligatory on it. And success is from Allah.