Duty for the Authority To take Alms

AT-TAWBA (REPENTANCE, DISPENSATION) : 103-106

9:103. Of their goods, take alms, that so thou mightest purify and sanctify them; and pray on their behalf. Verily thy prayers are a source of security for them: And Allah is One Who heareth and knoweth.
9:104. Know they not that Allah doth accept repentance from His votaries and receives their gifts of charity, and that Allah is verily He, the Oft-Returning, Most Merciful?

9:105. And say: "Work (righteousness): Soon will Allah observe your work, and His Messenger, and the Believers: Soon will ye be brought back to the knower of what is hidden and what is open: then will He show you the truth of all that ye did."
9:106. There are (yet) others, held in suspense for the command of Allah, whether He will punish them, or turn in mercy to them: and Allah is All-Knowing, Wise.