بسم الله الرحمن الرحيم
It is binding upon whoever possesses wealth to learn or ask about zakat as a result of it being obligatory upon him. Its distribution will not be in accordance with the legislation unless its distributor learns its rulings. This (learning) is related to the nisab (specified amount that is saved for one lunar year), the amount of zakat (taken from the nisab), and its recipients, etc. Perhaps he who is careless with regards to learning and asking about this subsequently falls into sin unknowingly, or he incurs sin due to delaying its payment, or by not giving it to those who rightfully merit it. Zakat is an obligation of the wealth, its distribution and imposition necessitates awareness (of such) by learning and asking.
Translated by Najeeb Al Anjelesi
Source: المنظار في بيان كثير من الأخطاء الشائعة