The poor rate: purification of wealth by payment of annual welfare due.
Literally, it means "purification;" it is a compulsory 2.5% tax on one of three categories of wealth: 1) metal coins (gold, silver, etc.), 2) grain crops (barley, wheat, grain, rice, etc.), and 3) animals raised for food consumption. Zakat is somehow a complicated subject; for details, readers are advised to consult books dealing with fiqh . Among its types are: zakat al-mal (taxable wealth accumulated during one full year), and zakat al-fitr (a tax to be paid by the head of a household at the commencement of the fast of the month of Ramadan).