Zakat is the fourth pillar of Islam. This word means to give away to the needy and poors a handful of money or other items by those who have enough of it. There is a prescribed measure of belongings either money or land or jewelry or any other thing with monetary value on which this sacred charity is obligatory. Allah SWT has also defined those to whom zakat can be given. Charity is the purifier of the assets. It is a way of circulating the wealth. In this way it never remains in single hands and circulation of wealth and money keeps it sure that every other can have resources to the basic needs of the life.
All the mp3bayan which cover the topic of zakat are listed here. Listen to them and learn about obeying this beautiful sunnah.