Zakat is one of the five pillars of Islam, and in various Islamic polities of the past was expected to be paid by all practising Muslims who have the financial means ("nisab"). In addition to their zakat obligations, Muslims were encouraged to make voluntary contributions ("sadaqat"). The zakat was not collected from non-Muslims, although they were required to pay the "jizyah" tax. Depending on the region, the dominant portion of zakat went typically to "Amil" (the zakat collectors) or Sabīlillāh (those fighting for religious cause, the caretaker of local mosque, or those working in the cause of God such as proselytizing non-Muslims to convert to Islam).