In the Islamic world, "Zakat" (charity), one of the Five Pillars of Islam, have been collected by the government since the time of the Rashidun caliph Umar in the 7th century, and used to provide income for the needy, including the poor, elderly, orphans, widows, and the disabled. According to the Islamic jurist Al-Ghazali (Algazel, 1058–111), the government was also expected to store up food supplies in every region in case a disaster or famine occurred. (See Bayt al-mal for further information.)