The Nisab is important because it is the basis of "zakat", which is one of the five pillars of Islam. Zakat is an obligatory charity that every eligible Muslim must pay to help those in need. The Nisab is the minimum threshold of wealth that a Muslim must possess before being required to pay Zakat. In other words, if a person's wealth exceeds the Nisab, they are obligated to pay Zakat. The Nisab amount is determined by the value of gold or silver and is updated regularly. This threshold ensures that Zakat is paid only by those who can afford it, and it helps to distribute wealth more fairly within the Muslim community.