Answer: The third pillar - Zakat
Explanation: Zakat or alms giving is one of the obligations of dedicated Muslims, who, if they are rich enough, must give aid to the poor. It is, in fact, a help for charitable purposes, which is a kind of tax, as it is prescribed by law, as one of the five pillars that Muslims must fulfilled in order to confirm and bear witness of the faith. Whether one will give Zakat to help the poor depends on the total assets, which must be above a certain value known as nisab. Anyone with a property above the value of nisab must give Zakat.
