Final answer:
The fourth pillar of Islam, Zakat, requires Muslims to give a portion of their wealth, typically at least 2.5%, to those in need, fostering community solidarity and justice.
Step-by-step explanation:
According to the fourth pillar of Islam, wealth sharing, which is known as Zakat, is an obligatory practice for Muslims. Zakat is a form of alms-giving treated in Islam as a religious obligation or tax, which, by Quranic ranking, is next after prayer (Salat) in importance.
As one of the Five Pillars of Islam, Zakat requires Muslims to donate a portion of their wealth to those in need. This amount is typically at least 2.5% of a Muslim's savings and wealth that is not used for personal necessities. The donations from Zakat are used to help the poor, the needy, and other beneficiaries described in Islamic law, thereby redistributing wealth in the community and fostering a sense of solidarity and justice.