I asked Abu Abdullah Imam Jafar ibn Muhammad Al-Sadiq (as) "What obligation does the Imam have concerning Zakat?" Imam (as) replied: "O Abu Muhammad, do you not know that the world belongs to the Imam? He places it wherever he wishes and gives it to whomever he wishes, and this is permissible for him by Allah (swt), the Almighty. The Imam never spends a single night while there remains a right of Allah (swt), the Almighty, upon him without fulfilling it, for Allah (swt) will hold him accountable for it."